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|
(*=============================================================================|
| PROJECT SNAP7 1.4.0 |
|==============================================================================|
| Copyright (C) 2013, 2014 Davide Nardella |
| All rights reserved. |
|==============================================================================|
| SNAP7 is free software: you can redistribute it and/or modify |
| it under the terms of the Lesser GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| It means that you can distribute your commercial software linked with |
| SNAP7 without the requirement to distribute the source code of your |
| application and without the requirement that your application be itself |
| distributed under LGPL. |
| |
| SNAP7 is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| Lesser GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License and a |
| copy of Lesser GNU General Public License along with Snap7. |
| If not, see http://www.gnu.org/licenses/ |
|==============================================================================|
| |
| Object PASCAL Interface Classes |
| |
| Compatibility : |
| Delphi/Embarcadero RAD : All 32/64 bit releases (Windows) |
| FreePascal (1) : 2.4.0+ 32/64 bit (Windows/Unix) |
| |
|=============================================================================*)
unit snap7;
interface
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
// Old compilers don't define MSWINDOWS
{$IFDEF WIN32}
{$IFNDEF MSWINDOWS}
{$DEFINE MSWINDOWS}
{$ENDIF}
{$ENDIF}
Const
// Library name
{$IFDEF MSWINDOWS}
snaplib = 'snap7.dll';
{$ELSE}
snaplib = 'libsnap7.so'; // valid for all Unix platforms
{$ENDIF}
// Native integrals
{$IFNDEF FPC}
{$IF CompilerVersion<21} // below Delphi 7
Type
NativeUint = LongWord;
NativeInt = LongInt;
{$IFEND}
{$ENDIF}
Type
S7Object = NativeUint; // Platform independent Object reference
// DON'T CONFUSE IT WITH AN OLE OBJECT, IT'S SIMPLY
// AN INTEGER (32 OR 64 BIT) VALUE USED AS HANDLE.
//******************************************************************************
// COMMON
//******************************************************************************
Const
errLibInvalidParam = -1;
errLibInvalidObject = -2;
// CPU status
S7CpuStatusUnknown = $00;
S7CpuStatusRun = $08;
S7CpuStatusStop = $04;
// ISO Errors
errIsoConnect = $00010000; // Connection error
errIsoDisconnect = $00020000; // Disconnect error
errIsoInvalidPDU = $00030000; // Bad format
errIsoInvalidDataSize = $00040000; // Bad Datasize passed to send/recv buffer is invalid
errIsoNullPointer = $00050000; // Null passed as pointer
errIsoShortPacket = $00060000; // A short packet received
errIsoTooManyFragments = $00070000; // Too many packets without EoT flag
errIsoPduOverflow = $00080000; // The sum of fragments data exceeded maximum packet size
errIsoSendPacket = $00090000; // An error occurred during send
errIsoRecvPacket = $000A0000; // An error occurred during recv
errIsoInvalidParams = $000B0000; // Invalid TSAP params
errIsoResvd_1 = $000C0000; // Unassigned
errIsoResvd_2 = $000D0000; // Unassigned
errIsoResvd_3 = $000E0000; // Unassigned
errIsoResvd_4 = $000F0000; // Unassigned
// Jobs
JobComplete = 0;
JobPending = 1;
Type
TS7Tag = packed record
Area : integer;
DBNumber : integer;
Start : integer;
Size : integer;
WordLen : integer;
end;
PS7Tag = ^TS7Tag;
//------------------------------------------------------------------------------
// PARAMS LIST
//------------------------------------------------------------------------------
Const
p_u16_LocalPort = 1;
p_u16_RemotePort = 2;
p_i32_PingTimeout = 3;
p_i32_SendTimeout = 4;
p_i32_RecvTimeout = 5;
p_i32_WorkInterval = 6;
p_u16_SrcRef = 7;
p_u16_DstRef = 8;
p_u16_SrcTSap = 9;
p_i32_PDURequest = 10;
p_i32_MaxClients = 11;
p_i32_BSendTimeout = 12;
p_i32_BRecvTimeout = 13;
p_u32_RecoveryTime = 14;
p_u32_KeepAliveTime = 15;
//******************************************************************************
// CLIENT
//******************************************************************************
// Error codes
errNegotiatingPDU = $00100000;
errCliInvalidParams = $00200000;
errCliJobPending = $00300000;
errCliTooManyItems = $00400000;
errCliInvalidWordLen = $00500000;
errCliPartialDataWritten = $00600000;
errCliSizeOverPDU = $00700000;
errCliInvalidPlcAnswer = $00800000;
errCliAddressOutOfRange = $00900000;
errCliInvalidTransportSize = $00A00000;
errCliWriteDataSizeMismatch = $00B00000;
errCliItemNotAvailable = $00C00000;
errCliInvalidValue = $00D00000;
errCliCannotStartPLC = $00E00000;
errCliAlreadyRun = $00F00000;
errCliCannotStopPLC = $01000000;
errCliCannotCopyRamToRom = $01100000;
errCliCannotCompress = $01200000;
errCliAlreadyStop = $01300000;
errCliFunNotAvailable = $01400000;
errCliUploadSequenceFailed = $01500000;
errCliInvalidDataSizeRecvd = $01600000;
errCliInvalidBlockType = $01700000;
errCliInvalidBlockNumber = $01800000;
errCliInvalidBlockSize = $01900000;
errCliDownloadSequenceFailed = $01A00000;
errCliInsertRefused = $01B00000;
errCliDeleteRefused = $01C00000;
errCliNeedPassword = $01D00000;
errCliInvalidPassword = $01E00000;
errCliNoPasswordToSetOrClear = $01F00000;
errCliJobTimeout = $02000000;
errCliPartialDataRead = $02100000;
errCliBufferTooSmall = $02200000;
errCliFunctionRefused = $02300000;
errCliDestroying = $02400000;
errCliInvalidParamNumber = $02500000;
errCliCannotChangeParam = $02600000;
MaxVars = 20; // Max vars that can be transferred with MultiRead/MultiWrite
// Client Connection Type
CONNTYPE_PG = $01; // Connect to the PLC as a PG
CONNTYPE_OP = $02; // Connect to the PLC as an OP
CONNTYPE_BASIC = $03; // Basic connection
// Area ID
S7AreaPE = $81;
S7AreaPA = $82;
S7AreaMK = $83;
S7AreaDB = $84;
S7AreaCT = $1C;
S7AreaTM = $1D;
// Word Length
S7WLBit = $01;
S7WLByte = $02;
S7WLChar = $03;
S7WLWord = $04;
S7WLInt = $05;
S7WLDWord = $06;
S7WLDInt = $07;
S7WLReal = $08;
S7WLDate = $09;
S7WLTOD = $0A;
S7WLTime = $0B;
S7WLS5Time = $0C;
S7WLDT = $0F;
S7WLCounter = $1C;
S7WLTimer = $1D;
// Block type
Block_OB = $38;
Block_DB = $41;
Block_SDB = $42;
Block_FC = $43;
Block_SFC = $44;
Block_FB = $45;
Block_SFB = $46;
// Sub Block Type
SubBlk_OB = $08;
SubBlk_DB = $0A;
SubBlk_SDB = $0B;
SubBlk_FC = $0C;
SubBlk_SFC = $0D;
SubBlk_FB = $0E;
SubBlk_SFB = $0F;
// Block languages
BlockLangAWL = $01;
BlockLangKOP = $02;
BlockLangFUP = $03;
BlockLangSCL = $04;
BlockLangDB = $05;
BlockLangGRAPH = $06;
Type
TS7Buffer = packed array[0..$FFFF] of byte;
PS7Buffer = ^TS7Buffer;
TS7DataItem = packed record
Area : integer;
WordLen : integer;
Result : integer;
DBNumber : integer;
Start : integer;
Amount : integer;
pdata : pbyte;
end;
PS7DataItem = ^TS7DataItem;
TS7DataItems = packed array[0..MaxVars-1] of TS7DataItem;
PS7DataItems = ^TS7DataItems;
TS7BlocksList = packed record
OBCount : integer;
FBCount : integer;
FCCount : integer;
SFBCount : integer;
SFCCount : integer;
DBCount : integer;
SDBCount : integer;
end;
PS7BlocksList = ^TS7BlocksList;
TS7BlockInfo = packed record
BlkType : integer;
BlkNumber : integer;
BlkLang : integer;
BlkFlags : integer;
MC7Size : integer; // The real size in bytes
LoadSize : integer;
LocalData : integer;
SBBLength : integer;
CheckSum : integer;
Version : integer;
// Chars info
CodeDate : packed array[0..10] of AnsiChar;
IntfDate : packed array[0..10] of AnsiChar;
Author : packed array[0..8] of AnsiChar;
Family : packed array[0..8] of AnsiChar;
Header : packed array[0..8] of AnsiChar;
end;
PS7BlockInfo = ^TS7BlockInfo;
TS7BlocksOfType = packed array[0..$1FFF] of word;
PS7BlocksOfType = ^TS7BlocksOfType;
TS7OrderCode = packed record
Code : packed array[0..20] of AnsiChar;
V1 : byte;
V2 : byte;
V3 : byte;
end;
PS7OrderCode = ^TS7OrderCode;
TS7CpuInfo = packed record
ModuleTypeName : packed array[0..32] of AnsiChar;
SerialNumber : packed array[0..24] of AnsiChar;
ASName : packed array[0..24] of AnsiChar;
Copyright : packed array[0..26] of AnsiChar;
ModuleName : packed array[0..24] of AnsiChar;
end;
PS7CpuInfo = ^TS7CpuInfo;
TS7CpInfo = packed record
MaxPduLengt : integer;
MaxConnections : integer;
MaxMpiRate : integer;
MaxBusRate : integer;
end;
PS7CpInfo = ^TS7CpInfo;
// See 33.1 of "System Software for S7-300/400 System and Standard Functions"
// and see SFC51 description too
SZL_HEADER = packed record
LENTHDR : word;
N_DR : word;
end;
PSZL_HEADER = ^SZL_HEADER;
// SZL Record
TS7SZL = packed record
Header : SZL_HEADER;
Data : packed array[0..$3FFF-4] of byte;
end;
PS7SZL = ^TS7SZL;
// List of available SZL IDs : same as SZL but List items are big-endian adjusted
TS7SZLList = packed record
Header : SZL_HEADER;
List : packed array[0..$1FFF-2] of word;
end;
PS7SZLList = ^TS7SZLList;
// See 33.19 of "System Software for S7-300/400 System and Standard Functions"
TS7Protection = packed record
sch_schal : word;
sch_par : word;
sch_rel : word;
bart_sch : word;
anl_sch : word;
end;
PS7Protection = ^TS7Protection;
// C++ time record, functions to convert it from/to TDateTime are provided ;-)
TCPP_tm = packed record
tm_sec : integer;
tm_min : integer;
tm_hour : integer;
tm_mday : integer;
tm_mon : integer;
tm_year : integer;
tm_wday : integer;
tm_yday : integer;
tm_isdst : integer;
end;
PCPP_tm = ^TCPP_tm;
// Client completion callback
TS7CliCompletion = procedure(usrPtr : Pointer; opCode, opResult : integer);
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Control functions
function Cli_Create : S7Object;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
procedure Cli_Destroy(var Client : S7Object);
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ConnectTo(Client : S7Object; Address : PAnsiChar; Rack, Slot : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_SetConnectionParams(Client : S7Object; Address : PAnsiChar; LocalTSAP, RemoteTSAP : word) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_SetConnectionType(Client : S7Object; ConnectionType : word) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_Connect(Client : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_Disconnect(Client : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetParam(Client : S7Object; ParamNumber : integer; pValue : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_SetParam(Client : S7Object; ParamNumber : integer; pValue : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_SetAsCallback(Client : S7Object; pCompletion, usrPtr : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Data I/O functions
function Cli_ReadArea(Client : S7Object; Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_WriteArea(Client : S7Object; Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ReadMultiVars(Client : S7Object; Items : PS7DataItems; ItemsCount : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_WriteMultiVars(Client : S7Object; Items : PS7DataItems; ItemsCount : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Data I/O Lean functions
function Cli_DBRead(Client : S7Object; DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_DBWrite(Client : S7Object; DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_MBRead(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_MBWrite(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_EBRead(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_EBWrite(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ABRead(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ABWrite(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_TMRead(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_TMWrite(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_CTRead(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_CTWrite(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Directory functions
function Cli_ListBlocks(Client : S7Object; pUsrData : PS7BlocksList) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetAgBlockInfo(Client : S7Object; BlockType, BlockNum : integer; pUsrData : PS7BlockInfo) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetPgBlockInfo(Client : S7Object; pBlock : pointer; pUsrData : PS7BlockInfo; Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ListBlocksOfType(Client : S7Object; BlockType : integer; pUsrData : PS7BlocksOfType; var ItemsCount : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Blocks functions
function Cli_Upload(Client : S7Object; BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_FullUpload(Client : S7Object; BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_Download(Client : S7Object; BlockNum : integer; pUsrData : pointer; Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_Delete(Client : S7Object; BlockType, BlockNum : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_DBGet(Client : S7Object; DBNumber : integer; pUsrData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_DBFill(Client : S7Object; DBNumber : integer; FillChar : byte) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Date/Time functions
function Cli_GetPlcDateTime(Client : S7Object; var DateTime : TCPP_tm) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_SetPlcDateTime(Client : S7Object; var DateTime : TCPP_tm) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_SetPlcSystemDateTime(Client : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// System Info functions
function Cli_GetOrderCode(Client : S7Object; pUsrData : PS7OrderCode) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetCpuInfo(Client : S7Object; pUsrData : PS7CpuInfo) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetCPInfo(Client : S7Object; pUsrData : PS7CpInfo) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ReadSZL(Client : S7Object; ID, Index : integer; pUsrData : PS7SZL; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ReadSZLList(Client : S7Object; pUsrData : PS7SZLList; var ItemsCount : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Control functions
function Cli_PlcHotStart(Client : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_PlcColdStart(Client : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_PlcStop(Client : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_CopyRamToRom(Client : S7Object; Timeout : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_Compress(Client : S7Object; Timeout : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetPlcStatus(Client : S7Object; var Status : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Security functions
function Cli_GetProtection(Client : S7Object; pUsrData : PS7Protection) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_SetSessionPassword(Client : S7Object; Password : PAnsiChar) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ClearSessionPassword(Client : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Async functions
function Cli_AsReadArea(Client : S7Object; Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsWriteArea(Client : S7Object; Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsDBRead(Client : S7Object; DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsDBWrite(Client : S7Object; DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsMBRead(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsMBWrite(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsEBRead(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsEBWrite(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsABRead(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsABWrite(Client : S7Object; Start, Size : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsTMRead(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsTMWrite(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsCTRead(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsCTWrite(Client : S7Object; Start, Amount : integer; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsListBlocksOfType(Client : S7Object; BlockType : integer; pUsrData : PS7BlocksOfType; var ItemsCount : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsReadSZL(Client : S7Object; ID, Index : integer; pUsrData : PS7SZL; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsReadSZLList(Client : S7Object; pUsrData : PS7SZLList; var ItemsCount : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsUpload(Client : S7Object; BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsFullUpload(Client : S7Object; BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsDownload(Client : S7Object; BlockNum : integer; pUsrData : pointer; Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsCopyRamToRom(Client : S7Object; Timeout : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsCompress(Client : S7Object; Timeout : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsDBGet(Client : S7Object; DBNumber : integer; pUsrData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_AsDBFill(Client : S7Object; DBNumber : integer; FillChar : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_CheckAsCompletion(Client : S7Object; var opResult : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_WaitAsCompletion(Client : S7Object; Timeout : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Low level
function Cli_IsoExchangeBuffer(Client : S7Object; pUsrData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Utility/Misc functions
function Cli_GetExecTime(Client : S7Object; var Time : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetLastError(Client : S7Object; var LastError : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetPduLength(Client : S7Object; Var Requested, Negotiated : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_ErrorText(Error : integer; Text : PAnsiChar; TextLen : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Cli_GetConnected(Client : S7Object; var IsConnected : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
//******************************************************************************
// SERVER
//******************************************************************************
Const
mkEvent = 0;
mkLog = 1;
OperationRead = 0;
OperationWrite = 1;
// Server Area ID (use with Register/unregister - Lock/unlock Area)
srvAreaPE = 0;
srvAreaPA = 1;
srvAreaMK = 2;
srvAreaCT = 3;
srvAreaTM = 4;
srvAreaDB = 5;
// Errors
errSrvCannotStart = $00100000; // Server cannot start
errSrvDBNullPointer = $00200000; // Passed null as PData
errSrvAreaAlreadyExists = $00300000; // Area Re-registration
errSrvUnknownArea = $00400000; // Unknown area
errSrvInvalidParams = $00500000; // Invalid param(s) supplied
errSrvTooManyDB = $00600000; // Cannot register DB
errSrvInvalidParamNumber = $00700000; // Invalid param (srv_get/set_param)
errSrvCannotChangeParam = $00800000; // Cannot change because running
// TCP Server Event codes
evcServerStarted = $00000001;
evcServerStopped = $00000002;
evcListenerCannotStart = $00000004;
evcClientAdded = $00000008;
evcClientRejected = $00000010;
evcClientNoRoom = $00000020;
evcClientException = $00000040;
evcClientDisconnected = $00000080;
evcClientTerminated = $00000100;
evcClientsDropped = $00000200;
evcReserved_00000400 = $00000400; // currently unused
evcReserved_00000800 = $00000800; // currently unused
evcReserved_00001000 = $00001000; // currently unused
evcReserved_00002000 = $00002000; // currently unused
evcReserved_00004000 = $00004000; // currently unused
evcReserved_00008000 = $00008000; // currently unused
// S7 Server Event Code
evcPDUincoming = $00010000;
evcDataRead = $00020000;
evcDataWrite = $00040000;
evcNegotiatePDU = $00080000;
evcReadSZL = $00100000;
evcClock = $00200000;
evcUpload = $00400000;
evcDownload = $00800000;
evcDirectory = $01000000;
evcSecurity = $02000000;
evcControl = $04000000;
evcReserved_08000000 = $08000000; // currently unused
evcReserved_10000000 = $10000000; // currently unused
evcReserved_20000000 = $20000000; // currently unused
evcReserved_40000000 = $40000000; // currently unused
evcReserved_80000000 = $80000000; // currently unused
// Masks to enable/disable all
evcAll = $FFFFFFFF;
evcNone = $00000000;
// Event SubCodes
evsUnknown = $0000;
evsStartUpload = $0001;
evsStartDownload = $0001;
evsGetBlockList = $0001;
evsStartListBoT = $0002;
evsListBoT = $0003;
evsGetBlockInfo = $0004;
evsGetClock = $0001;
evsSetClock = $0002;
evsSetPassword = $0001;
evsClrPassword = $0002;
// Event Params : functions group
grProgrammer = $0041;
grCyclicData = $0042;
grBlocksInfo = $0043;
grSZL = $0044;
grPassword = $0045;
grBSend = $0046;
grClock = $0047;
grSecurity = $0045;
// Event Params : control codes
CodeControlUnknown = $0000;
CodeControlColdStart = $0001;
CodeControlWarmStart = $0002;
CodeControlStop = $0003;
CodeControlCompress = $0004;
CodeControlCpyRamRom = $0005;
CodeControlInsDel = $0006;
// Event Result
evrNoError = $0000;
evrFragmentRejected = $0001;
evrMalformedPDU = $0002;
evrSparseBytes = $0003;
evrCannotHandlePDU = $0004;
evrNotImplemented = $0005;
evrErrException = $0006;
evrErrAreaNotFound = $0007;
evrErrOutOfRange = $0008;
evrErrOverPDU = $0009;
evrErrTransportSize = $000A;
evrInvalidGroupUData = $000B;
evrInvalidSZL = $000C;
evrDataSizeMismatch = $000D;
evrCannotUpload = $000E;
evrCannotDownload = $000F;
evrUploadInvalidID = $0010;
evrResNotFound = $0011;
type
// Unix Timestamp, the best compact way to store date/time if we don't need
// millisecond resolution.
time_t = NativeInt;
Type
TSrvEvent = packed record
EvtTime : time_t; // Timestamp
EvtSender : integer; // Sender
EvtCode : longword; // Event code
EvtRetCode : word; // Event result
EvtParam1 : word; // Param 1
EvtParam2 : word; // Param 2
EvtParam3 : word; // Param 3
EvtParam4 : word; // Param 4
end;
PSrvEvent = ^TSrvEvent;
TSrvCallBack = procedure(usrPtr : pointer; PEvent : PSrvEvent; Size : integer);
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
TSrvRWAreaCallBack = function(usrPtr : pointer; Sender, Operation : integer; PTag : PS7Tag; pUsrData : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
Const
// Server status
SrvStopped = 0;
SrvRunning = 1;
SrvError = 2;
function Srv_Create : S7Object;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
procedure Srv_Destroy(var Server : S7Object);
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_GetParam(Server : S7Object; ParamNumber : integer; pValue : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_SetParam(Server : S7Object; ParamNumber : integer; pValue : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_Start(Server : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_StartTo(Server : S7Object; Address : PAnsiChar) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_Stop(Server : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_RegisterArea(Server : S7Object; AreaCode : integer; Index : word; pUsrData : pointer; Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_UnregisterArea(Server : S7Object; AreaCode : integer; Index : word) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_LockArea(Server : S7Object; AreaCode : integer; Index : word) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_UnlockArea(Server : S7Object; AreaCode : integer; Index : word) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_GetStatus(Server : S7Object; Var ServerStatus, CpuStatus, ClientsCount : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_SetCpuStatus(Server : S7Object; CpuStatus : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_PickEvent(Server : S7Object; var Event : TSrvEvent; var EvtReady : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_ClearEvents(Server : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_GetMask(Server : S7Object; MaskKind : integer; Var Mask : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_SetMask(Server : S7Object; MaskKind : integer; Mask : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_SetEventsCallback(Server : S7Object; CallBack, usrPtr : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_SetReadEventsCallback(Server : S7Object; CallBack, usrPtr : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_SetRWAreaCallback(Server : S7Object; CallBack, usrPtr : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_ErrorText(Error : integer; Text : PAnsiChar; TextLen : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Srv_EventText(var Event : TSrvEvent; Text : PAnsiChar; TextLen : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
//******************************************************************************
// PARTNER
//******************************************************************************
Const
// Partner status
par_stopped = 0; // stopped
par_connecting = 1; // running and active, connecting
par_waiting = 2; // running and waiting for a connection
par_linked = 3; // running and connected : linked
par_sending = 4; // sending data
par_receiving = 5; // receiving data
par_binderror = 6; // error starting passive server
// Errors
errParAddressInUse = $00200000;
errParNoRoom = $00300000;
errServerNoRoom = $00400000;
errParInvalidParams = $00500000;
errParNotLinked = $00600000;
errParBusy = $00700000;
errParFrameTimeout = $00800000;
errParInvalidPDU = $00900000;
errParSendTimeout = $00A00000;
errParRecvTimeout = $00B00000;
errParSendRefused = $00C00000;
errParNegotiatingPDU = $00D00000;
errParSendingBlock = $00E00000;
errParRecvingBlock = $00F00000;
errBindError = $01000000;
errParDestroying = $01100000;
errParInvalidParamNumber = $01200000;
errParCannotChangeParam = $01300000;
errParBufferTooSmall = $01400000;
Type
TParBRecvEvent = procedure(usrPtr : pointer; opResult : integer; R_ID : longword; pdata : pointer; size : integer);
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
TParBSendCompletion = procedure(usrPtr : pointer; opResult : integer);
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Control
function Par_Create(Active : longbool) : S7Object;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
procedure Par_Destroy(var Partner : S7Object);
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_GetParam(Partner : S7Object; ParamNumber : integer; pValue : Pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_SetParam(Partner : S7Object; ParamNumber : integer; pValue : Pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_Start(Partner : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_StartTo(Partner : S7Object;
LocalAddress : PAnsiChar;
RemoteAddress : PAnsiChar;
LocalTSAP : word;
RemoteTSAP : word) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_Stop(Partner : S7Object) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Data I/O functions : BSend
function Par_BSend(Partner : S7Object; R_ID : longword; pUsrData : pointer; Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_AsBSend(Partner : S7Object;R_ID : longword; pUsrData : pointer; Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_CheckAsBSendCompletion(Partner : S7Object; var opResult : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_WaitAsBSendCompletion(Partner : S7Object; Timeout : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_SetSendCallback(Partner : S7Object; pCompletion, usrPtr : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Data I/O functions : BRecv
function Par_BRecv(Partner : S7Object; var R_ID : longword; pData : pointer; var Size : integer; Timeout : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_CheckAsBRecvCompletion(Partner : S7Object; var opResult : integer; var R_ID : longword; pData : pointer; var Size : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_SetRecvCallback(Partner : S7Object; pCompletion, usrPtr : pointer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
// Utility functions
function Par_GetTimes(Partner : S7Object; var SendTime : longword; var RecvTime : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_GetLastError(Partner : S7Object; var LastError : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_GetStatus(Partner : S7Object; Var Status : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_GetStats(Partner : S7Object; Var BytesSent, BytesRecv, SendErrors, RecvErrors : longword) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
function Par_ErrorText(Error : integer; Text : PAnsiChar; TextLen : integer) : integer;
{$IFDEF MSWINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
//******************************************************************************
// S7CLIENT CLASS
//******************************************************************************
Type
{ TS7Client }
TS7Client = class
private
HC : S7Object;
public
constructor Create;
destructor Destroy; override;
// Control functions
function ConnectTo(Address : AnsiString; Rack, Slot : integer) : integer;
function SetConnectionParams(Address : AnsiString; LocalTSAP, RemoteTSAP : word) : integer;
function SetConnectionType(ConnectionType : word) : integer;
function Connect : integer;
function Disconnect : integer;
function GetParam(ParamNumber : integer; pValue : pointer) : integer;
function SetParam(ParamNumber : integer; pValue : pointer) : integer;
function SetAsCallback(pCompletion, usrPtr : pointer) : integer;
// Data I/O Main functions
function ReadArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
function WriteArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
function ReadMultiVars(Items : PS7DataItems; ItemsCount : integer) : integer;
function WriteMultiVars(Items : PS7DataItems; ItemsCount : integer) : integer;
// Data I/O Lean functions
function DBRead(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
function DBWrite(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
function MBRead(Start, Size : integer; pUsrData : pointer) : integer;
function MBWrite(Start, Size : integer; pUsrData : pointer) : integer;
function EBRead(Start, Size : integer; pUsrData : pointer) : integer;
function EBWrite(Start, Size : integer; pUsrData : pointer) : integer;
function ABRead(Start, Size : integer; pUsrData : pointer) : integer;
function ABWrite(Start, Size : integer; pUsrData : pointer) : integer;
function TMRead(Start, Amount : integer; pUsrData : pointer) : integer;
function TMWrite(Start, Amount : integer; pUsrData : pointer) : integer;
function CTRead(Start, Amount : integer; pUsrData : pointer) : integer;
function CTWrite(Start, Amount : integer; pUsrData : pointer) : integer;
// Directory functions
function ListBlocks(pUsrData : PS7BlocksList) : integer;
function GetAgBlockInfo(BlockType, BlockNum : integer; pUsrData : PS7BlockInfo) : integer;
function GetPgBlockInfo(pBlock : pointer; pUsrData : PS7BlockInfo; Size : integer) : integer;
function ListBlocksOfType(BlockType : integer; pUsrData : PS7BlocksOfType; var ItemsCount : integer) : integer;
// Blocks functions
function Upload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
function FullUpload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
function Download(BlockNum : integer; pUsrData : pointer; Size : integer) : integer;
function Delete(BlockType, BlockNum : integer) : integer;
function DBGet(DBNumber : integer; pUsrData : pointer; var Size : integer) : integer;
function DBFill(DBNumber : integer; FillChar : integer) : integer;
// Date/Time functions
function GetPlcDateTime(Var DateTime : TDateTime) : integer;
function SetPlcDateTime(Var DateTime : TDateTime) : integer;
function SetPlcSystemDateTime : integer;
// System Info functions
function GetOrderCode(pUsrData : PS7OrderCode) : integer;
function GetCpuInfo(pUsrData : PS7CpuInfo) : integer;
function GetCPInfo(pUsrData : PS7CpInfo) : integer;
function ReadSZL(ID, Index : integer; pUsrData : PS7SZL; var Size : integer) : integer;
function ReadSZLList(pUsrData : PS7SZLList; var ItemsCount : integer) : integer;
// Control functions
function PlcHotStart : integer;
function PlcColdStart : integer;
function PlcStop : integer;
function CopyRamToRom(Timeout : integer) : integer;
function Compress(Timeout : integer) : integer;
function GetPlcStatus(var Status : integer) : integer;
// Security functions
function GetProtection(pUsrData : PS7Protection) : integer;
function SetSessionPassword(Password : AnsiString) : integer;
function ClearSessionPassword : integer;
// Async functions
function AsReadArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
function AsWriteArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
function AsDBRead(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
function AsDBWrite(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
function AsMBRead(Start, Size : integer; pUsrData : pointer) : integer;
function AsMBWrite(Start, Size : integer; pUsrData : pointer) : integer;
function AsEBRead(Start, Size : integer; pUsrData : pointer) : integer;
function AsEBWrite(Start, Size : integer; pUsrData : pointer) : integer;
function AsABRead(Start, Size : integer; pUsrData : pointer) : integer;
function AsABWrite(Start, Size : integer; pUsrData : pointer) : integer;
function AsTMRead(Start, Amount : integer; pUsrData : pointer) : integer;
function AsTMWrite(Start, Amount : integer; pUsrData : pointer) : integer;
function AsCTRead(Start, Amount : integer; pUsrData : pointer) : integer;
function AsCTWrite(Start, Amount : integer; pUsrData : pointer) : integer;
function AsListBlocksOfType(BlockType : integer; pUsrData : PS7BlocksOfType; var ItemsCount : integer) : integer;
function AsReadSZL(ID, Index : integer; pUsrData : PS7SZL; var Size : integer) : integer;
function AsReadSZLList(pUsrData : PS7SZLList; var ItemsCount : integer) : integer;
function AsUpload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
function AsFullUpload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
function AsDownload(BlockNum : integer; pUsrData : pointer; Size : integer) : integer;
function AsCopyRamToRom(Timeout : integer) : integer;
function AsCompress(Timeout : integer) : integer;
function AsDBGet(DBNumber : integer; pUsrData : pointer; var Size : integer) : integer;
function AsDBFill(DBNumber : integer; FillChar : integer) : integer;
function CheckAsCompletion(var opResult : integer) : boolean;
function WaitAsCompletion(Timeout : longword) : integer;
// Low level
function IsoExchangeBuffer(pUsrData : pointer; var Size : integer) : integer;
// Utility/Misc functions
function Time : longword;
function LastError : integer;
function PduLength : integer;
function PduRequested : integer;
function PlcStatus : integer;
function Connected : boolean;
end;
//******************************************************************************
// SNAP7SERVER CLASS
//******************************************************************************
TS7Server = class
private
HS : S7Object;
function GetEventsMask: longword;
function GetLogMask: longword;
procedure SetEventsMask(const Value: longword);
procedure SetLogMask(const Value: longword);
function GetStatus(Var ServerStatus, CpuStatus, ClientsCount : integer) : integer;
function GetClientsCount: integer;
function GetCpuStatus: integer;
function GetServerStatus: integer;
procedure SetCpuStatus(const Value: integer);
public
constructor Create;
destructor Destroy; override;
// Control
function Start : integer;
function StartTo(Address : String) : integer;
function Stop : integer;
function GetParam(ParamNumber : integer; pValue : pointer) : integer;
function SetParam(ParamNumber : integer; pValue : pointer) : integer;
// Resources
function RegisterArea(AreaCode : integer; Index : integer; pUsrData : pointer; Size : integer) : integer;
function UnregisterArea(AreaCode : integer; Index : integer) : integer;
function LockArea(AreaCode : integer; Index : integer) : integer;
function UnlockArea(AreaCode : integer; Index : integer) : integer;
// Events
function PickEvent(var Event : TSrvEvent) : boolean;
function ClearEvents : integer;
function SetEventsCallback(CallBack, usrPtr : pointer) : integer;
function SetReadEventsCallback(CallBack, usrPtr : pointer) : integer;
function SetRWAreaCallback(CallBack, usrPtr : pointer) : integer;
// Properties
property EventsMask : longword read GetEventsMask write SetEventsMask;
property LogMask : longword read GetLogMask write SetLogMask;
property ServerStatus : integer read GetServerStatus;
property CpuStatus : integer read GetCpuStatus write SetCpuStatus;
property ClientsCount : integer read GetClientsCount;
end;
//******************************************************************************
// SNAP7PARTNER CLASS
//******************************************************************************
TS7Partner = class
private
HP : S7Object;
FBytesSent : longword;
FBytesRecv : longword;
FSendErrors : longword;
FRecvErrors : longword;
FActive: boolean;
procedure GetStatistics;
function GetLastError : integer;
function GetBytesRecv: integer;
function GetBytesSent: integer;
function GetRecvErrors: integer;
function GetRecvTime: longword;
function GetSendErrors: integer;
function GetSendTime: longword;
function GetStatus: integer;
function GetLinked: boolean;
public
constructor Create(AsActive : boolean);
destructor Destroy; override;
function GetParam(ParamNumber : integer; pValue : Pointer) : integer;
function SetParam(ParamNumber : integer; pValue : Pointer) : integer;
function Start : integer;
function StartTo(LocalAddress, RemoteAddress : AnsiString;
LocalTSAP, RemoteTSAP : word ) : integer;
function Stop : integer;
// Block send
function BSend(R_ID : longword; pUsrData : pointer; size : integer) : integer;
function AsBSend(R_ID : longword; pUsrData : pointer; size : integer) : integer;
function CheckAsBSendCompletion(var opResult : integer) : boolean;
function WaitAsBSendCompletion(Timeout : longword) : integer;
function SetSendCallback(pSendCompletion, usrPtr : pointer) : integer;
// Block recv
function BRecv(Timeout : longword; var R_ID : longword;
pUsrData : pointer; var Size : integer) : integer;
function CheckAsBRecvCompletion(var opResult : integer; var R_ID : longword;
pUsrData : pointer; var Size : integer) : boolean;
function SetRecvCallback(pRecvCompletion, usrPtr : pointer) : integer;
// Read only properties
property Active : boolean read FActive;
property Status : integer read GetStatus;
property Linked : boolean read GetLinked;
property BytesSent : integer read GetBytesSent;
property BytesRecv : integer read GetBytesRecv;
property SendErrors : integer read GetSendErrors;
property RecvErrors : integer read GetRecvErrors;
property LastError : integer read GetLastError;
property SendTime : longword read GetSendTime;
property RecvTime : longword read GetRecvTime;
end;
//******************************************************************************
// S7 CONVERSION CLASS
//******************************************************************************
TS7Type = (S7Int, S7DInt, S7Word, S7DWord, S7Real, S7DT_To_DateTime, DateTime_To_S7DT);
TS7Helper = class
private
function GetInt(pval: pointer): smallint;
procedure SetInt(pval: pointer; const Value: smallint);
function GetWord(pval: pointer): word;
procedure SetWord(pval: pointer; const Value: word);
function GetDInt(pval: pointer): longint;
procedure SetDInt(pval: pointer; const Value: longint);
function GetDWord(pval: pointer): longword;
procedure SetDWord(pval: pointer; const Value: longword);
function GetDateTime(pval: pointer): TDateTime;
procedure SetDateTime(pval: pointer; const Value: TDateTime);
function GetReal(pval: pointer): single;
procedure SetReal(pval: pointer; const Value: single);
function GetBit(pval: pointer; BitIndex: integer): boolean;
procedure SetBit(pval: pointer; BitIndex: integer; const Value: boolean);
public
procedure Reverse(pval : pointer; const S7Type : TS7Type);
property ValBit[pval : pointer; BitIndex : integer] : boolean read GetBit write SetBit;
property ValInt[pval : pointer] : smallint read GetInt write SetInt;
property ValDInt[pval : pointer] : longint read GetDInt write SetDInt;
property ValWord[pval : pointer] : word read GetWord write SetWord;
property ValDWord[pval : pointer] : longword read GetDWord write SetDWord;
property ValReal[pval : pointer] : single read GetReal write SetReal;
property ValDateTime[pval : pointer] : TDateTime read GetDateTime write SetDateTime;
end;
// Error text
function CliErrorText(Error : integer) : string;
function SrvErrorText(Error : integer) : string;
function ParErrorText(Error : integer) : string;
function SrvEventText(var Event : TSrvEvent) : string;
Var
S7 : TS7Helper;
implementation
Uses
DateUtils,
SysUtils;
Const
TextLen = 1024;
//------------------------------------------------------------------------------
// C++ Datatime conversion helpers
//------------------------------------------------------------------------------
function DateTimeToCPP_tm(T : TDateTime) : TCPP_tm;
Var
YY,MM,DD,HH,NN,SS,DOW,MS : word;
begin
DecodeDateFully(T,YY,MM,DD,DOW);
DecodeTime(T,HH,NN,SS,MS);
with Result do
begin
tm_year :=YY-1900;
tm_mon :=MM-1;
tm_mday :=DD;
tm_hour :=HH;
tm_min :=NN;
tm_sec :=SS;
tm_wday :=DOW-1;
tm_isdst:=-1; // Info not available
end;
end;
//------------------------------------------------------------------------------
function CPP_tmToDateTime(var T : TCPP_tm) : TDateTime;
Var
Date, Time : TDateTime;
begin
with T do
begin
if TryEncodeDate(tm_year+1900,tm_mon+1,tm_mday,Date) then
begin
if TryEncodeTime(tm_hour,tm_min,tm_sec,0,Time) then
Result:=Date+Time
else
Result:=0;
end
else
Result:=0;
end;
end;
//******************************************************************************
// CLIENT FORWARDS
//******************************************************************************
function Cli_Create; external snaplib name 'Cli_Create';
procedure Cli_Destroy; external snaplib name 'Cli_Destroy';
function Cli_ConnectTo; external snaplib name 'Cli_ConnectTo';
function Cli_SetConnectionParams; external snaplib name 'Cli_SetConnectionParams';
function Cli_SetConnectionType; external snaplib name 'Cli_SetConnectionType';
function Cli_Disconnect; external snaplib name 'Cli_Disconnect';
function Cli_Connect; external snaplib name 'Cli_Connect';
function Cli_GetParam; external snaplib name 'Cli_GetParam';
function Cli_SetParam; external snaplib name 'Cli_SetParam';
function Cli_SetAsCallback; external snaplib name 'Cli_SetAsCallback';
function Cli_ReadArea; external snaplib name 'Cli_ReadArea';
function Cli_WriteArea; external snaplib name 'Cli_WriteArea';
function Cli_ReadMultiVars; external snaplib name 'Cli_ReadMultiVars';
function Cli_WriteMultiVars; external snaplib name 'Cli_WriteMultiVars';
function Cli_DBRead; external snaplib name 'Cli_DBRead';
function Cli_DBWrite; external snaplib name 'Cli_DBWrite';
function Cli_MBRead; external snaplib name 'Cli_MBRead';
function Cli_MBWrite; external snaplib name 'Cli_MBWrite';
function Cli_EBRead; external snaplib name 'Cli_EBRead';
function Cli_EBWrite; external snaplib name 'Cli_EBWrite';
function Cli_ABRead; external snaplib name 'Cli_ABRead';
function Cli_ABWrite; external snaplib name 'Cli_ABWrite';
function Cli_TMRead; external snaplib name 'Cli_TMRead';
function Cli_TMWrite; external snaplib name 'Cli_TMWrite';
function Cli_CTRead; external snaplib name 'Cli_CTRead';
function Cli_CTWrite; external snaplib name 'Cli_CTWrite';
function Cli_ListBlocks; external snaplib name 'Cli_ListBlocks';
function Cli_GetAgBlockInfo; external snaplib name 'Cli_GetAgBlockInfo';
function Cli_GetPgBlockInfo; external snaplib name 'Cli_GetPgBlockInfo';
function Cli_ListBlocksOfType; external snaplib name 'Cli_ListBlocksOfType';
function Cli_Upload; external snaplib name 'Cli_Upload';
function Cli_FullUpload; external snaplib name 'Cli_FullUpload';
function Cli_Download; external snaplib name 'Cli_Download';
function Cli_Delete; external snaplib name 'Cli_Delete';
function Cli_GetPlcDateTime; external snaplib name 'Cli_GetPlcDateTime';
function Cli_SetPlcDateTime; external snaplib name 'Cli_SetPlcDateTime';
function Cli_SetPlcSystemDateTime; external snaplib name 'Cli_SetPlcSystemDateTime';
function Cli_GetOrderCode; external snaplib name 'Cli_GetOrderCode';
function Cli_GetCpuInfo; external snaplib name 'Cli_GetCpuInfo';
function Cli_GetCPInfo; external snaplib name 'Cli_GetCpInfo';
function Cli_ReadSZL; external snaplib name 'Cli_ReadSZL';
function Cli_ReadSZLList; external snaplib name 'Cli_ReadSZLList';
function Cli_PlcHotStart; external snaplib name 'Cli_PlcHotStart';
function Cli_PlcColdStart; external snaplib name 'Cli_PlcColdStart';
function Cli_PlcStop; external snaplib name 'Cli_PlcStop';
function Cli_CopyRamToRom; external snaplib name 'Cli_CopyRamToRom';
function Cli_Compress; external snaplib name 'Cli_Compress';
function Cli_GetPlcStatus; external snaplib name 'Cli_GetPlcStatus';
function Cli_GetProtection; external snaplib name 'Cli_GetProtection';
function Cli_SetSessionPassword; external snaplib name 'Cli_SetSessionPassword';
function Cli_ClearSessionPassword; external snaplib name 'Cli_ClearSessionPassword';
function Cli_DBGet; external snaplib name 'Cli_DBGet';
function Cli_DBFill; external snaplib name 'Cli_DBFill';
function Cli_GetExecTime; external snaplib name 'Cli_GetExecTime';
function Cli_GetPduLength; external snaplib name 'Cli_GetPduLength';
function Cli_GetLastError; external snaplib name 'Cli_GetLastError';
function Cli_AsReadArea; external snaplib name 'Cli_AsReadArea';
function Cli_AsWriteArea; external snaplib name 'Cli_AsWriteArea';
function Cli_AsDBRead; external snaplib name 'Cli_AsDBRead';
function Cli_AsDBWrite; external snaplib name 'Cli_AsDBWrite';
function Cli_AsMBRead; external snaplib name 'Cli_AsMBRead';
function Cli_AsMBWrite; external snaplib name 'Cli_AsMBWrite';
function Cli_AsEBRead; external snaplib name 'Cli_AsEBRead';
function Cli_AsEBWrite; external snaplib name 'Cli_AsEBWrite';
function Cli_AsABRead; external snaplib name 'Cli_AsABRead';
function Cli_AsABWrite; external snaplib name 'Cli_AsABWrite';
function Cli_AsTMRead; external snaplib name 'Cli_AsTMRead';
function Cli_AsTMWrite; external snaplib name 'Cli_AsTMWrite';
function Cli_AsCTRead; external snaplib name 'Cli_AsCTRead';
function Cli_AsCTWrite; external snaplib name 'Cli_AsCTWrite';
function Cli_AsListBlocksOfType; external snaplib name 'Cli_AsListBlocksOfType';
function Cli_AsReadSZL; external snaplib name 'Cli_AsReadSZL';
function Cli_AsReadSZLList; external snaplib name 'Cli_AsReadSZLList';
function Cli_AsUpload; external snaplib name 'Cli_AsUpload';
function Cli_AsFullUpload; external snaplib name 'Cli_AsFullUpload';
function Cli_AsDownload; external snaplib name 'Cli_AsDownload';
function Cli_AsCopyRamToRom; external snaplib name 'Cli_AsCopyRamToRom';
function Cli_AsCompress; external snaplib name 'Cli_AsCompress';
function Cli_AsDBGet; external snaplib name 'Cli_AsDBGet';
function Cli_AsDBFill; external snaplib name 'Cli_AsDBFill';
function Cli_CheckAsCompletion; external snaplib name 'Cli_CheckAsCompletion';
function Cli_WaitAsCompletion; external snaplib name 'Cli_WaitAsCompletion';
function Cli_IsoExchangeBuffer; external snaplib name 'Cli_IsoExchangeBuffer';
function Cli_ErrorText; external snaplib name 'Cli_ErrorText';
function Cli_GetConnected; external snaplib name 'Cli_GetConnected';
//******************************************************************************
// SERVER FORWARDS
//******************************************************************************
function Srv_Create; external snaplib name 'Srv_Create';
procedure Srv_Destroy; external snaplib name 'Srv_Destroy';
function Srv_GetParam; external snaplib name 'Srv_GetParam';
function Srv_SetParam; external snaplib name 'Srv_SetParam';
function Srv_Start; external snaplib name 'Srv_Start';
function Srv_StartTo; external snaplib name 'Srv_StartTo';
function Srv_Stop; external snaplib name 'Srv_Stop';
function Srv_RegisterArea; external snaplib name 'Srv_RegisterArea';
function Srv_UnregisterArea; external snaplib name 'Srv_UnregisterArea';
function Srv_LockArea; external snaplib name 'Srv_LockArea';
function Srv_UnlockArea; external snaplib name 'Srv_UnlockArea';
function Srv_GetStatus; external snaplib name 'Srv_GetStatus';
function Srv_SetCpuStatus; external snaplib name 'Srv_SetCpuStatus';
function Srv_PickEvent; external snaplib name 'Srv_PickEvent';
function Srv_ClearEvents; external snaplib name 'Srv_ClearEvents';
function Srv_GetMask; external snaplib name 'Srv_GetMask';
function Srv_SetMask; external snaplib name 'Srv_SetMask';
function Srv_SetEventsCallback; external snaplib name 'Srv_SetEventsCallback';
function Srv_SetReadEventsCallback; external snaplib name 'Srv_SetReadEventsCallback';
function Srv_SetRWAreaCallback; external snaplib name 'Srv_SetRWAreaCallback';
function Srv_ErrorText; external snaplib name 'Srv_ErrorText';
function Srv_EventText; external snaplib name 'Srv_EventText';
//******************************************************************************
// PARTNER FORWARDS
//******************************************************************************
function Par_Create; external snaplib name 'Par_Create';
procedure Par_Destroy; external snaplib name 'Par_Destroy';
function Par_GetParam; external snaplib name 'Par_GetParam';
function Par_SetParam; external snaplib name 'Par_SetParam';
function Par_Start; external snaplib name 'Par_Start';
function Par_StartTo; external snaplib name 'Par_StartTo';
function Par_Stop; external snaplib name 'Par_Stop';
function Par_BSend; external snaplib name 'Par_BSend';
function Par_AsBSend; external snaplib name 'Par_AsBSend';
function Par_CheckAsBSendCompletion; external snaplib name 'Par_CheckAsBSendCompletion';
function Par_WaitAsBSendCompletion; external snaplib name 'Par_WaitAsBSendCompletion';
function Par_SetSendCallback; external snaplib name 'Par_SetSendCallback';
function Par_BRecv; external snaplib name 'Par_BRecv';
function Par_CheckAsBRecvCompletion; external snaplib name 'Par_CheckAsBRecvCompletion';
function Par_SetRecvCallback; external snaplib name 'Par_SetRecvCallback';
function Par_GetTimes; external snaplib name 'Par_GetTimes';
function Par_GetLastError; external snaplib name 'Par_GetLastError';
function Par_GetStatus; external snaplib name 'Par_GetStatus';
function Par_GetStats; external snaplib name 'Par_GetStats';
function Par_ErrorText; external snaplib name 'Par_ErrorText';
//******************************************************************************
// TS7Client CLASS IMPLEMENTATION
//******************************************************************************
constructor TS7Client.Create;
begin
inherited;
HC:=Cli_Create;
end;
//------------------------------------------------------------------------------
destructor TS7Client.Destroy;
begin
Cli_Destroy(HC);
inherited;
end;
//------------------------------------------------------------------------------
function TS7Client.ConnectTo(Address : AnsiString; Rack,Slot : integer) : integer;
begin
Result:=Cli_ConnectTo(HC,PAnsiChar(Address), Rack, Slot)
end;
//------------------------------------------------------------------------------
function TS7Client.SetConnectionParams(Address: AnsiString; LocalTSAP, RemoteTSAP: word ) : integer;
begin
Result:=Cli_SetConnectionParams(HC,PAnsiChar(Address), LocalTSAP, RemoteTSAP)
end;
//------------------------------------------------------------------------------
function TS7Client.SetConnectionType(ConnectionType : word ) : integer;
begin
Result:=Cli_SetConnectionType(HC, ConnectionType)
end;
//------------------------------------------------------------------------------
function TS7Client.Connect : integer;
begin
Result:=Cli_Connect(HC)
end;
//------------------------------------------------------------------------------
function TS7Client.Disconnect : integer;
begin
Result:=Cli_Disconnect(HC)
end;
//------------------------------------------------------------------------------
function TS7Client.SetAsCallback(pCompletion, usrPtr : pointer) : integer;
begin
Result:=Cli_SetAsCallback(HC,pCompletion,usrPtr)
end;
//------------------------------------------------------------------------------
function TS7Client.ReadArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_ReadArea(HC,Area,DBNumber,Start,Amount,WordLen,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.WaitAsCompletion(Timeout: longword): integer;
begin
Result:=Cli_WaitAsCompletion(HC,Timeout)
end;
//------------------------------------------------------------------------------
function TS7Client.WriteArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_WriteArea(HC,Area,DBNumber,Start,Amount,WordLen,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.ReadMultiVars(Items : PS7DataItems; ItemsCount : integer) : integer;
begin
Result:=Cli_ReadMultiVars(HC,Items,ItemsCount)
end;
//------------------------------------------------------------------------------
function TS7Client.WriteMultiVars(Items : PS7DataItems; ItemsCount : integer) : integer;
begin
Result:=Cli_WriteMultiVars(HC,Items,ItemsCount)
end;
//------------------------------------------------------------------------------
function TS7Client.DBRead(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_DBRead(HC,DBNumber,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.DBWrite(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_DBWrite(HC,DBNumber,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.MBRead(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_MBRead(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.MBWrite(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_MBWrite(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.EBRead(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_EBRead(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.EBWrite(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_EBWrite(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.ABRead(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_ABRead(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.ABWrite(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_ABWrite(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.TMRead(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_TMRead(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.TMWrite(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_TMWrite(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.CTRead(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_CTRead(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.CTWrite(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_CTWrite(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.ListBlocks(pUsrData : PS7BlocksList) : integer;
begin
Result:=Cli_ListBlocks(HC,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.GetAgBlockInfo(BlockType, BlockNum : integer; pUsrData : PS7BlockInfo) : integer;
begin
Result:=Cli_GetAgBlockInfo(HC,BlockType,BlockNum,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.GetPgBlockInfo(pBlock : pointer; pUsrData : PS7BlockInfo; Size : integer) : integer;
begin
Result:=Cli_GetPgBlockInfo(HC,pBlock,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.ListBlocksOfType(BlockType : integer; pUsrData : PS7BlocksOfType; var ItemsCount : integer) : integer;
begin
Result:=Cli_ListBlocksOfType(HC,BlockType,pUsrData,ItemsCount)
end;
//------------------------------------------------------------------------------
function TS7Client.Upload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
begin
Result:=Cli_Upload(HC,BlockType,BlockNum,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.FullUpload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
begin
Result:=Cli_FullUpload(HC,BlockType,BlockNum,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.Download(BlockNum : integer; pUsrData : pointer; Size : integer) : integer;
begin
Result:=Cli_Download(HC,BlockNum,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.Delete(BlockType, BlockNum : integer) : integer;
begin
Result:=Cli_Delete(HC,BlockType,BlockNum)
end;
//------------------------------------------------------------------------------
function TS7Client.DBGet(DBNumber : integer; pUsrData : pointer; var Size : integer) : integer;
begin
Result:=Cli_DBGet(HC,DBNumber,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.DBFill(DBNumber : integer; FillChar : integer) : integer;
begin
Result:=Cli_DBFill(HC,DBNumber,FillChar)
end;
//------------------------------------------------------------------------------
function TS7Client.GetPlcDateTime(Var DateTime : TDateTime) : integer;
Var
CPP_tm : TCPP_tm;
begin
Result:=Cli_GetPlcDateTime(HC,CPP_tm);
if Result=0 then
DateTime:=CPP_tmToDateTime(CPP_tm);
end;
//------------------------------------------------------------------------------
function TS7Client.GetParam(ParamNumber : integer; pValue: pointer): integer;
begin
Result:=Cli_GetParam(HC, ParamNumber, pValue);
end;
//------------------------------------------------------------------------------
function TS7Client.SetParam(ParamNumber : integer; pValue: pointer): integer;
begin
Result:=Cli_SetParam(HC, ParamNumber, pValue);
end;
//------------------------------------------------------------------------------
function TS7Client.SetPlcDateTime(Var DateTime : TDateTime) : integer;
Var
CPP_tm : TCPP_tm;
begin
CPP_tm:=DateTimeToCPP_tm(DateTime);
Result:=Cli_SetPlcDateTime(HC,CPP_tm);
end;
//------------------------------------------------------------------------------
function TS7Client.SetPlcSystemDateTime : integer;
begin
Result:=Cli_SetPlcSystemDateTime(HC)
end;
//------------------------------------------------------------------------------
function TS7Client.GetOrderCode(pUsrData : PS7OrderCode) : integer;
begin
Result:=Cli_GetOrderCode(HC,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.GetCpuInfo(pUsrData : PS7CpuInfo) : integer;
begin
Result:=Cli_GetCpuInfo(HC,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.GetCPInfo(pUsrData : PS7CpInfo) : integer;
begin
Result:=Cli_GetCPInfo(HC,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.ReadSZL(ID, Index : integer; pUsrData : PS7SZL; var Size : integer) : integer;
begin
Result:=Cli_ReadSZL(HC,ID,Index,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.ReadSZLList(pUsrData : PS7SZLList; var ItemsCount : integer) : integer;
begin
Result:=Cli_ReadSZLList(HC,pUsrData,ItemsCount)
end;
//------------------------------------------------------------------------------
function TS7Client.PlcHotStart : integer;
begin
Result:=Cli_PlcHotStart(HC)
end;
//------------------------------------------------------------------------------
function TS7Client.PlcColdStart : integer;
begin
Result:=Cli_PlcColdStart(HC)
end;
//------------------------------------------------------------------------------
function TS7Client.PlcStatus: integer;
Var
Return : integer;
begin
Return:=Cli_GetPlcStatus(HC, Result);
if (Return<>0) then
Result:=Return;
end;
//------------------------------------------------------------------------------
function TS7Client.Connected: boolean;
Var
IsConnected : integer;
begin
if Cli_GetConnected(HC, IsConnected)=0 then
Result:=IsConnected<>0
else
Result:=false;
end;
//------------------------------------------------------------------------------
function TS7Client.PlcStop : integer;
begin
Result:=Cli_PlcStop(HC)
end;
//------------------------------------------------------------------------------
function TS7Client.CopyRamToRom(Timeout : integer) : integer;
begin
Result:=Cli_CopyRamToRom(HC,Timeout)
end;
//------------------------------------------------------------------------------
function TS7Client.Compress(Timeout : integer) : integer;
begin
Result:=Cli_Compress(HC,Timeout)
end;
//------------------------------------------------------------------------------
function TS7Client.GetPlcStatus(var Status : integer) : integer;
begin
Result:=Cli_GetPlcStatus(HC,Status)
end;
//------------------------------------------------------------------------------
function TS7Client.GetProtection(pUsrData : PS7Protection) : integer;
begin
Result:=Cli_GetProtection(HC,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.SetSessionPassword(Password : AnsiString) : integer;
begin
Result:=Cli_SetSessionPassword(HC,PAnsiChar(Password))
end;
//------------------------------------------------------------------------------
function TS7Client.ClearSessionPassword : integer;
begin
Result:=Cli_ClearSessionPassword(HC)
end;
//------------------------------------------------------------------------------
function TS7Client.AsReadArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsReadArea(HC,Area,DBNumber,Start,Amount,WordLen,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsWriteArea(Area, DBNumber, Start, Amount, WordLen : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsWriteArea(HC,Area,DBNumber,Start,Amount,WordLen,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsDBRead(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsDBRead(HC,DBNumber,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsDBWrite(DBNumber, Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsDBWrite(HC,DBNumber,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsMBRead(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsMBRead(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsMBWrite(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsMBWrite(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsEBRead(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsEBRead(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsEBWrite(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsEBWrite(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsABRead(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsABRead(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsABWrite(Start, Size : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsABWrite(HC,Start,Size,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsTMRead(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsTMRead(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsTMWrite(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsTMWrite(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsCTRead(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsCTRead(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsCTWrite(Start, Amount : integer; pUsrData : pointer) : integer;
begin
Result:=Cli_AsCTWrite(HC,Start,Amount,pUsrData)
end;
//------------------------------------------------------------------------------
function TS7Client.AsListBlocksOfType(BlockType : integer; pUsrData : PS7BlocksOfType; var ItemsCount : integer) : integer;
begin
Result:=Cli_AsListBlocksOfType(HC,BlockType,pUsrData,ItemsCount)
end;
//------------------------------------------------------------------------------
function TS7Client.AsReadSZL(ID, Index : integer; pUsrData : PS7SZL; var Size : integer) : integer;
begin
Result:=Cli_AsReadSZL(HC,ID,Index,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.AsReadSZLList(pUsrData: PS7SZLList;
var ItemsCount: integer): integer;
begin
Result:=Cli_AsReadSZLList(HC,pUsrData,ItemsCount)
end;
//------------------------------------------------------------------------------
function TS7Client.AsUpload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
begin
Result:=Cli_AsUpload(HC,BlockType,BlockNum,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.AsFullUpload(BlockType, BlockNum : integer; pUsrData : pointer; var Size : integer) : integer;
begin
Result:=Cli_AsFullUpload(HC,BlockType,BlockNum,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.AsDownload(BlockNum : integer; pUsrData : pointer; Size : integer) : integer;
begin
Result:=Cli_AsDownload(HC,BlockNum,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.AsCopyRamToRom(Timeout : integer) : integer;
begin
Result:=Cli_AsCopyRamToRom(HC,Timeout)
end;
//------------------------------------------------------------------------------
function TS7Client.AsCompress(Timeout : integer) : integer;
begin
Result:=Cli_AsCompress(HC,Timeout)
end;
//------------------------------------------------------------------------------
function TS7Client.AsDBGet(DBNumber : integer; pUsrData : pointer; var Size : integer) : integer;
begin
Result:=Cli_AsDBGet(HC,DBNumber,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.AsDBFill(DBNumber : integer; FillChar : integer) : integer;
begin
Result:=Cli_AsDBFill(HC,DBNumber,FillChar)
end;
//------------------------------------------------------------------------------
function TS7Client.CheckAsCompletion(var opResult : integer) : boolean;
begin
Result:=Cli_CheckAsCompletion(HC,opResult)=JobComplete;
end;
//------------------------------------------------------------------------------
function TS7Client.IsoExchangeBuffer(pUsrData : pointer; var Size : integer) : integer;
begin
Result:=Cli_IsoExchangeBuffer(HC,pUsrData,Size)
end;
//------------------------------------------------------------------------------
function TS7Client.Time : longword;
Var
Return : integer;
begin
Return:=Cli_GetExecTime(HC,Result);
if Return<>0 then
Result:=longword(-1);
end;
//------------------------------------------------------------------------------
function TS7Client.LastError : integer;
begin
Cli_GetLastError(HC,Result);
end;
//------------------------------------------------------------------------------
function TS7Client.PduLength : integer;
Var
Requested : integer;
begin
Cli_GetPduLength(HC, Requested, Result);
end;
//------------------------------------------------------------------------------
function TS7Client.PduRequested: integer;
Var
PduLength : integer;
begin
Cli_GetPduLength(HC, Result, PduLength);
end;
//******************************************************************************
// TS7Server CLASS IMPLEMENTATION
//******************************************************************************
constructor TS7Server.Create;
begin
inherited Create;
HS:=Srv_Create;
end;
//------------------------------------------------------------------------------
destructor TS7Server.Destroy;
begin
if HS<>0 then
Srv_Destroy(HS);
inherited;
end;
//------------------------------------------------------------------------------
function TS7Server.ClearEvents: integer;
begin
Result:=Srv_ClearEvents(HS)
end;
//------------------------------------------------------------------------------
function TS7Server.PickEvent(var Event: TSrvEvent) : boolean;
Var
EvtReady : integer;
begin
if Srv_PickEvent(HS, Event, EvtReady)=0 then
Result := EvtReady<>0
else
Result:=False;
end;
//------------------------------------------------------------------------------
function TS7Server.GetClientsCount: integer;
Var
ServerStatus, CpuStatus : integer;
begin
if GetStatus(ServerStatus, CpuStatus, Result)<>0 then
Result:=0;
end;
//------------------------------------------------------------------------------
function TS7Server.GetCpuStatus: integer;
Var
ServerStatus, ClientsCount : integer;
begin
if GetStatus(ServerStatus, Result, ClientsCount)<>0 then
Result:=0;
end;
//------------------------------------------------------------------------------
function TS7Server.GetEventsMask: longword;
begin
if Srv_GetMask(HS, mkEvent, Result)<>0 then
Result:=0;
end;
//------------------------------------------------------------------------------
function TS7Server.GetLogMask: longword;
begin
if Srv_GetMask(HS, mkLog, Result)<>0 then
Result:=0;
end;
//------------------------------------------------------------------------------
function TS7Server.GetServerStatus: integer;
Var
CpuStatus, ClientsCount : integer;
begin
if GetStatus(Result, CpuStatus, ClientsCount)<>0 then
Result:=0;
end;
//------------------------------------------------------------------------------
function TS7Server.GetStatus(var ServerStatus, CpuStatus,
ClientsCount: integer): integer;
begin
Result:=Srv_GetStatus(HS, ServerStatus, CpuStatus, ClientsCount);
end;
//------------------------------------------------------------------------------
function TS7Server.LockArea(AreaCode, Index: integer): integer;
begin
Result:=Srv_LockArea(HS, AreaCode, Index);
end;
//------------------------------------------------------------------------------
function TS7Server.RegisterArea(AreaCode, Index: integer; pUsrData: pointer;
Size: integer): integer;
begin
Result:=Srv_RegisterArea(HS,AreaCode,Index,pUsrData,Size);
end;
//------------------------------------------------------------------------------
procedure TS7Server.SetCpuStatus(const Value: integer);
begin
Srv_SetCpuStatus(HS, Value);
end;
//------------------------------------------------------------------------------
function TS7Server.SetEventsCallback(CallBack, usrPtr: pointer): integer;
begin
Result:=Srv_SetEventsCallback(HS,CallBack,usrPtr);
end;
//------------------------------------------------------------------------------
function TS7Server.SetReadEventsCallback(CallBack, usrPtr: pointer): integer;
begin
Result:=Srv_SetReadEventsCallback(HS,CallBack,usrPtr);
end;
//------------------------------------------------------------------------------
function TS7Server.SetRWAreaCallback(CallBack, usrPtr : pointer) : integer;
begin
Result:=Srv_SetRWAreaCallback(HS,CallBack,usrPtr);
end;
//------------------------------------------------------------------------------
procedure TS7Server.SetEventsMask(const Value: longword);
begin
Srv_SetMask(HS, mkEvent, Value);
end;
//------------------------------------------------------------------------------
procedure TS7Server.SetLogMask(const Value: longword);
begin
Srv_SetMask(HS, mkLog, Value);
end;
//------------------------------------------------------------------------------
function TS7Server.GetParam(ParamNumber : integer; pValue: pointer): integer;
begin
Result:=Srv_GetParam(HS, ParamNumber ,pValue)
end;
//------------------------------------------------------------------------------
function TS7Server.SetParam(ParamNumber : integer; pValue: pointer): integer;
begin
Result:=Srv_SetParam(HS, ParamNumber ,pValue)
end;
//------------------------------------------------------------------------------
function TS7Server.Start: integer;
begin
Result:=Srv_Start(HS)
end;
//------------------------------------------------------------------------------
function TS7Server.StartTo(Address: String): integer;
begin
Result:=Srv_StartTo(HS, PAnsiChar(AnsiString(Address)));
end;
//------------------------------------------------------------------------------
function TS7Server.Stop: integer;
begin
Result:=Srv_Stop(HS)
end;
//------------------------------------------------------------------------------
function TS7Server.UnlockArea(AreaCode, Index: integer): integer;
begin
Result:=Srv_UnlockArea(HS,AreaCode,Index)
end;
//------------------------------------------------------------------------------
function TS7Server.UnregisterArea(AreaCode, Index: integer): integer;
begin
Result:=Srv_UnregisterArea(HS,AreaCode, Index)
end;
//******************************************************************************
// TS7Partner CLASS IMPLEMENTATION
//******************************************************************************
function TS7Partner.AsBSend(R_ID: longword; pUsrData: pointer;
size: integer): integer;
begin
Result:=Par_AsBSend(HP, R_ID, pUsrData, Size);
end;
//------------------------------------------------------------------------------
function TS7Partner.BRecv(Timeout: longword; var R_ID: longword;
pUsrData: pointer; var Size: integer): integer;
begin
Result:=Par_BRecv(HP, R_ID, pUsrData, Size, Timeout);
end;
//------------------------------------------------------------------------------
function TS7Partner.BSend(R_ID: longword; pUsrData: pointer;
size: integer): integer;
begin
Result:=Par_BSend(HP, R_ID, pUsrData, Size);
end;
//------------------------------------------------------------------------------
function TS7Partner.CheckAsBRecvCompletion(var opResult: integer;
var R_ID: longword; pUsrData: pointer; var Size: integer): boolean;
begin
Result:=Par_CheckAsBRecvCompletion(HP, opResult, R_ID, pUsrData, Size)=JobComplete;
end;
//------------------------------------------------------------------------------
function TS7Partner.CheckAsBSendCompletion(var opResult: integer): boolean;
begin
Result:=Par_CheckAsBSendCompletion(HP, opResult)=JobComplete;
end;
//------------------------------------------------------------------------------
constructor TS7Partner.Create(AsActive: boolean);
begin
HP := Par_Create(AsActive);
end;
//------------------------------------------------------------------------------
destructor TS7Partner.Destroy;
begin
Par_Destroy(HP);
inherited;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetBytesRecv: integer;
begin
GetStatistics;
Result:=FBytesRecv;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetBytesSent: integer;
begin
GetStatistics;
Result:=FBytesSent;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetLastError: integer;
begin
if Par_GetLastError(HP, Result)<>0 then
Result:=errLibInvalidObject;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetLinked: boolean;
begin
Result:=Status=par_linked;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetRecvErrors: integer;
begin
GetStatistics;
Result:=FRecvErrors;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetRecvTime: longword;
Var
FSendTime : longword;
begin
if Par_GetTimes(HP, FSendTime, Result)<>0 then
Result:=0;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetSendErrors: integer;
begin
GetStatistics;
Result:=FSendErrors;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetSendTime: longword;
Var
FRecvTime : longword;
begin
if Par_GetTimes(HP, Result, FRecvTime)<>0 then
Result:=0;
end;
//------------------------------------------------------------------------------
procedure TS7Partner.GetStatistics;
begin
if Par_GetStats(HP, FBytesSent, FBytesRecv, FSendErrors, FRecvErrors)<>0 then
begin
FBytesSent :=0;
FBytesRecv :=0;
FSendErrors:=0;
FRecvErrors:=0;
end;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetStatus: integer;
begin
if Par_GetStatus(HP, Result)<>0 then
Result:=errLibInvalidObject;
end;
//------------------------------------------------------------------------------
function TS7Partner.GetParam(ParamNumber: integer; pValue: Pointer): integer;
begin
Result:=Par_SetParam(HP, ParamNumber, pValue);
end;
//------------------------------------------------------------------------------
function TS7Partner.SetParam(ParamNumber: integer; pValue: Pointer): integer;
begin
Result:=Par_SetParam(HP, ParamNumber, pValue);
end;
//------------------------------------------------------------------------------
function TS7Partner.SetRecvCallback(pRecvCompletion, usrPtr: pointer): integer;
begin
Result:=Par_SetRecvCallback(HP, pRecvCompletion, usrPtr);
end;
//------------------------------------------------------------------------------
function TS7Partner.SetSendCallback(pSendCompletion, usrPtr: pointer): integer;
begin
Result:=Par_SetSendCallback(HP, pSendCompletion, usrPtr);
end;
//------------------------------------------------------------------------------
function TS7Partner.Start: integer;
begin
Result:=Par_Start(HP);
end;
//------------------------------------------------------------------------------
function TS7Partner.StartTo(LocalAddress, RemoteAddress: AnsiString; LocalTSAP,
RemoteTSAP: word): integer;
begin
Result:=Par_StartTo(HP, PAnsiChar(LocalAddress), PAnsiChar(RemoteAddress),
LocalTSAP, RemoteTSAP);
end;
//------------------------------------------------------------------------------
function TS7Partner.Stop: integer;
begin
Result:=Par_Stop(HP);
end;
//------------------------------------------------------------------------------
function TS7Partner.WaitAsBSendCompletion(Timeout: longword): integer;
begin
Result:=Par_WaitAsBSendCompletion(HP, Timeout);
end;
//******************************************************************************
// S7 CLASS IMPLEMENTATION
//******************************************************************************
function TS7Helper.GetBit(pval: pointer; BitIndex: integer): boolean;
Const
Mask : array[0..7] of byte = ($01,$02,$04,$08,$10,$20,$40,$80);
begin
if BitIndex<0 then BitIndex:=0;
if BitIndex>7 then BitIndex:=7;
Result:=pbyte(pval)^ and Mask[BitIndex] <> 0;
end;
//------------------------------------------------------------------------------
function TS7Helper.GetDateTime(pval: pointer): TDateTime;
Type
S7DT = packed array[0..7] of byte;
Var
Buffer : ^S7DT;
YY,MM,DD,HH,NN,SS,MS : word;
C,D,U : integer;
function BCD(const B: byte): word;
begin
Result:=(B and $0F) + ((B shr 4) * 10);
end;
begin
Buffer:=pval;
YY:= Buffer^[0];
if YY>137 then // 137 dec = 89 BCD
YY:=1900+BCD(YY)
else
YY:=2000+BCD(YY);
MM:=BCD(Buffer^[1]);
DD:=BCD(Buffer^[2]);
HH:=BCD(Buffer^[3]);
NN:=BCD(Buffer^[4]);
SS:=BCD(Buffer^[5]);
// Millisec
MS:=Buffer^[6];
MS:=(MS shl 8)+Buffer^[7];
// Last 4 bit are Day of Week
MS:=MS shr 4;
// Hex to Int
C:=((MS and $0F00) shr 8) * 100;
D:=((MS and $00F0) shr 4) * 10;
U:= (MS and $000F);
MS:=C+D+U;
TryEncodeDateTime(YY,MM,DD,HH,NN,SS,MS,Result);
end;
//------------------------------------------------------------------------------
function TS7Helper.GetDInt(pval: pointer): longint;
Var
DW : packed array[0..3] of byte absolute Result;
begin
DW[0]:=pbyte(NativeInt(pval)+3)^;
DW[1]:=pbyte(NativeInt(pval)+2)^;
DW[2]:=pbyte(NativeInt(pval)+1)^;
DW[3]:=pbyte(pval)^;
end;
//------------------------------------------------------------------------------
function TS7Helper.GetDWord(pval: pointer): longword;
Var
DW : packed array[0..3] of byte absolute Result;
begin
DW[0]:=pbyte(NativeInt(pval)+3)^;
DW[1]:=pbyte(NativeInt(pval)+2)^;
DW[2]:=pbyte(NativeInt(pval)+1)^;
DW[3]:=pbyte(pval)^;
end;
//------------------------------------------------------------------------------
function TS7Helper.GetInt(pval: pointer): smallint;
Var
BW : packed array[0..1] of byte absolute Result;
begin
BW[0]:=pbyte(NativeInt(pval)+1)^;
BW[1]:=pbyte(pval)^;
end;
//------------------------------------------------------------------------------
function TS7Helper.GetReal(pval: pointer): single;
Var
DW : packed array[0..3] of byte absolute Result;
begin
DW[0]:=pbyte(NativeInt(pval)+3)^;
DW[1]:=pbyte(NativeInt(pval)+2)^;
DW[2]:=pbyte(NativeInt(pval)+1)^;
DW[3]:=pbyte(pval)^;
end;
//------------------------------------------------------------------------------
function TS7Helper.GetWord(pval: pointer): word;
Var
BW : packed array[0..1] of byte absolute Result;
begin
BW[0]:=pbyte(NativeInt(pval)+1)^;
BW[1]:=pbyte(pval)^;
end;
//------------------------------------------------------------------------------
procedure TS7Helper.Reverse(pval: pointer; const S7Type: TS7Type);
Var
DT : TDateTime;
begin
case S7Type of
S7Int,
S7Word: SetWord(pval, pword(pval)^);
S7DInt,
S7DWord,
S7Real: SetDWord(pval, plongword(pval)^);
S7DT_To_DateTime: pDateTime(pval)^:=GetDateTime(pval);
DateTime_To_S7DT: begin
DT:=pdateTime(pval)^;
SetDateTime(pval, DT);
end;
end;
end;
//------------------------------------------------------------------------------
procedure TS7Helper.SetBit(pval: pointer; BitIndex: integer; const Value: boolean);
Const
Mask : array[0..7] of byte = ($01,$02,$04,$08,$10,$20,$40,$80);
begin
if BitIndex<0 then BitIndex:=0;
if BitIndex>7 then BitIndex:=7;
if Value then
pbyte(pval)^ := pbyte(pval)^ or Mask[BitIndex]
else
pbyte(pval)^ := pbyte(pval)^ and not Mask[BitIndex];
end;
//------------------------------------------------------------------------------
procedure TS7Helper.SetDateTime(pval: pointer; const Value: TDateTime);
Type
DATE_AND_TIME = packed array[1..8] of byte;
pDT = ^DATE_AND_TIME;
function BCD(Value : word) : byte;
begin
Result:=((Value div 10) shl 4) OR (Value mod 10);
end;
function BCDW(Value : word) : word;
Var
AppC, AppD : word;
begin
AppC :=(Value div 100);
Dec(Value,AppC * 100);
AppD :=(Value div 10);
Dec(Value,AppD * 10);
Result:=(AppC shl 8) + (AppD shl 4) + Value;
end;
Var
DT : pDT;
MsDOW, AYear, AMonth, ADay,
AHour, AMinute, ASecond, AMilliSecond: Word;
begin
DT:=pval;
DecodeDateTime(Value,AYear, AMonth, ADay, AHour, AMinute, ASecond, AMilliSecond);
if AYear>1999 then
AYear:=AYear-2000
else
AYear:=AYear-1900;
DT^[1]:=BCD(AYear);
DT^[2]:=BCD(AMonth);
DT^[3]:=BCD(ADay);
DT^[4]:=BCD(AHour);
DT^[5]:=BCD(AMinute);
DT^[6]:=BCD(ASecond);
MsDOW:=(BCDW(AMillisecond) shl 4) + DayOfWeek(Value)+1;
DT^[7]:=HI(MsDOW);
DT^[8]:=LO(MsDOW);
end;
//------------------------------------------------------------------------------
procedure TS7Helper.SetDInt(pval: pointer; const Value: longint);
Var
DW : packed array[0..3] of byte absolute value;
begin
pbyte(pval)^:=DW[3];
pbyte(NativeInt(pval)+1)^:=DW[2];
pbyte(NativeInt(pval)+2)^:=DW[1];
pbyte(NativeInt(pval)+3)^:=DW[0];
end;
//------------------------------------------------------------------------------
procedure TS7Helper.SetDWord(pval: pointer; const Value: longword);
Var
DW : packed array[0..3] of byte absolute value;
begin
pbyte(pval)^:=DW[3];
pbyte(NativeInt(pval)+1)^:=DW[2];
pbyte(NativeInt(pval)+2)^:=DW[1];
pbyte(NativeInt(pval)+3)^:=DW[0];
end;
//------------------------------------------------------------------------------
procedure TS7Helper.SetInt(pval: pointer; const Value: smallint);
Var
BW : packed array[0..1] of byte absolute value;
begin
pbyte(NativeInt(pval)+1)^:=BW[0];
pbyte(pval)^:=BW[1];
end;
//------------------------------------------------------------------------------
procedure TS7Helper.SetReal(pval: pointer; const Value: single);
Var
DW : packed array[0..3] of byte absolute value;
begin
pbyte(pval)^:=DW[3];
pbyte(NativeInt(pval)+1)^:=DW[2];
pbyte(NativeInt(pval)+2)^:=DW[1];
pbyte(NativeInt(pval)+3)^:=DW[0];
end;
//------------------------------------------------------------------------------
procedure TS7Helper.SetWord(pval: pointer; const Value: word);
Var
BW : packed array[0..1] of byte absolute value;
begin
pbyte(NativeInt(pval)+1)^:=BW[0];
pbyte(pval)^:=BW[1];
end;
//******************************************************************************
// TEXT ROUTINES
//******************************************************************************
function CliErrorText(Error : integer) : string;
Var
Text : packed array[0..TextLen-1] of AnsiChar;
begin
if Cli_ErrorText(Error, @Text, TextLen)=0 then
Result:=String(Text)
else
Result:='LIB : Error getting text';
end;
//---------------------------------------------------------------------------
function SrvErrorText(Error : integer) : string;
Var
Text : packed array[0..TextLen-1] of AnsiChar;
begin
if Srv_ErrorText(Error, @Text, TextLen)=0 then
Result:=String(Text)
else
Result:='LIB : Error getting text';
end;
//---------------------------------------------------------------------------
function ParErrorText(Error : integer) : string;
Var
Text : packed array[0..TextLen-1] of AnsiChar;
begin
if Par_ErrorText(Error, @Text, TextLen)=0 then
Result:=String(Text)
else
Result:='LIB : Error getting text';
end;
//---------------------------------------------------------------------------
function SrvEventText(var Event : TSrvEvent) : string;
Var
Text : packed array[0..TextLen-1] of AnsiChar;
begin
if Srv_EventText(Event, @Text, TextLen)=0 then
Result:=String(Text)
else
Result:='LIB : Error getting text';
end;
initialization
S7 := TS7Helper.Create;
finalization
S7.Free;
end.
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