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Desc: APC UPS cables
File: apc.txt
Date: 12 February 2010
Auth: Arjen de Korte <adkorte-guest@alioth.debian.org
http://lists.alioth.debian.org/pipermail/nut-upsuser/2005-August/000118.html
Note that APC UPS serial cable part numbers follow a numbering scheme
where the "940-" prefix identifies them as cables.
940-1000 straight through cable
940-0103 null modem cable
940-0020 Basic Signaling Cable (OB and kill power)
940-0023 Simple Signaling Cable (OB only)
940-LL24 Smart Signaling Cable
940-0095 PnP Cable (see Apcupsd manual for diagram)
940-0119 Simple Signaling Cable (OB and kill power)
940-0127 RJ45-10P10C to USB Cable
940-0128 Simple Signaling Cable for Back-UPS CS
"LL" represents the length:
00 six feet
NN NN feet
The suffix letter represents a minor revision in physical design, or a
change of OEM, _not_ a change of wiring or pin-out, and all cables
differing only in this suffix letter are electrically interchangeable.
Note though the following quote from the APC Discussion Forums: "At one
point there were a small number of revision D cables [940-0024D] that
had some shielding issues from the manufacturer that could maybe cause
[...] [spontaneous] self-tests)."
+-----------------------------------------------------------------+
| |
| Black APC 940-0024C Smart Signalling UPS Cable Wiring Diagram |
| This information is verified and tested to be 100% correct. |
| |
+-----------------------------------------------------------------+
| |
| DB9M(UPS) 2m Cable DB9F(Computer) |
| --------- -------- -------------- |
| |
| (SHELL)<---------+----//----+----------------<(SHELL) |
| | | |
| - - |
| | | | | |
| CHASSIS 9<--------------//---------------------<5 SG |
| | | | | |
| TXD 2<--------------//---------------------<2 RXD |
| | | | | |
| RXD 1<--------------//---------------------<3 TXD |
| | | | | |
| - - +--<1 DCD |
| | |
| +--<4 DTR |
| NOTES: |
| Cable type is shielded 28AWG. +--<7 RTS |
| The DB shells are connected | |
| to each other via the shield. +--<8 CTS |
| |
+-----------------------------------------------------------------+
| |
| Operation: The UPS communicates with the Computer via |
| ordinary RS-232 serial protocol at 2400-8N1 with software |
| flow control. Jumpered pins in the DB9F connector are for |
| automatic or PNP cable identification by UPS software. |
| |
+-----------------------------------------------------------------+
| |
| Male (pins) Female (holes) |
| DB9 RS-232 PC |
| type connector 1 5 5 1 |
| ---------------- _______________ _______________ |
| Pinout numbering \ . . . . . / \ o o o o o / |
| looking into the \ . . . . / \ o o o o / |
| end of the cable ----------- ----------- |
| 6 9 9 6 |
| |
| NOTE: Solder a wire to the metal shell for use as a FRAME-GND |
| |
+-----------------------------------------------------------------+
+-----------------------------------------------------------------+
| |
| Gray APC 940-0020B Simple Signalling UPS Cable Wiring Diagram |
| This information is verified and tested to be 100% correct. |
| |
+-----------------------------------------------------------------+
| |
| DB9M(UPS) 2m Cable DB9F(Computer) |
| --------- -------- -------------- |
| |
| (SHELL)<-------+----//----+-------------------<(SHELL) |
| | | |
| CHASSIS 9<--+ - - |
| | | | | | |
| COMMON 4<--+---------//------------------------<5 SG |
| | | | | |
| POWER-FAIL 2<------------//------------------------<8 CTS |
| | | | | |
| SHUTDOWN 1<------------//------------------------<4 DTR |
| | | | | |
| BATTERY-LOW 5<------------//--------47K--+--47K--+--<7 RTS |
| | | | | | | |
| - - | E | |
| NOTES: |B |<--+ |
| RTS must be held at +V SPACE. +---| |
| TXD must be held at -V MARK. 2N3906 |---+--<1 DCD |
| All resistors are 5% 1/8W CF. C | |
| Cable type is shielded 28AWG. 4K7 |
| The DB shells are connected | |
| to each other via the shield. +--<3 TXD |
| |
+-----------------------------------------------------------------+
| |
| Operation: The UPS communicates with the Computer via |
| the RS-232 handshaking lines only, and does not use any |
| serial protocol. Upon power fail, the UPS forces CTS to |
| -V MARK. When the battery is low, the UPS forces DCD to |
| +V SPACE via the transistor. When the Computer forces a |
| +V SPACE on DTR, the UPS will shut down and turn off. |
| Presence of the cable can be sensed by signaling on TXD |
| while monitoring DCD. |
| |
+-----------------------------------------------------------------+
| |
| Male (pins) Female (holes) |
| DB9 RS-232 PC |
| type connector 1 5 5 1 |
| ---------------- _______________ _______________ |
| Pinout numbering \ . . . . . / \ o o o o o / |
| looking into the \ . . . . / \ o o o o / |
| end of the cable ----------- ----------- |
| 6 9 9 6 |
| |
| NOTE: Solder a wire to the metal shell for use as a FRAME-GND |
| |
+-----------------------------------------------------------------+
+-----------------------------------------------------------------+
| |
| Gray APC 940-0095A Smart Signalling UPS Cable Wiring Diagram |
| This information is verified and tested to be 100% correct. |
| |
+-----------------------------------------------------------------+
| |
| DB9M(UPS) 2m Cable DB9F(Computer) |
| --------- -------- -------------- |
| |
| (SHELL)<-------+----//----+--------------------<(SHELL) |
| | | |
| CHASSIS 9<--+ - - |
| | | | | | |
| COMMON 4<--+---------//-------------------------<5 SG |
| | | | | |
| BATTERY-LOW 5<------------//--------47K--+--47K--+---<4 DTR |
| | | | | | | |
| | +---<6 DSR |
| | | | | | E | |
| NOTES: |B |<--+---<8 CTS |
| DTR must be held at +V SPACE. | | +---| |
| TXD must be held at -V MARK. 2N3906 |---+---<1 DCD |
| All resistors are 5% 1/8W CF. | | C | |
| Cable type is shielded 28AWG. 4K7 |
| The DB shells are connected | | | |
| to each other via the shield. +----4K7---+---<3 TXD |
| | | | | | |
| | |
| | | | | | 1N4148 |
| SHUTDOWN 1<------------//----------+----|<|-------<7 RTS |
| | | | | K A |
| POWER-FAIL 2<------------//---------------------+---<2 RXD |
| | | | | | |
| - - +---<9 RI |
| |
+-----------------------------------------------------------------+
| |
| Operation: The UPS can communicate with the Computer |
| solely via the RS-232 handshaking lines, or via RS-232 |
| serial protocol at 2400-8N1 with software flow control. |
| Upon power fail, the UPS forces RI to -V MARK. When the |
| battery is low, the UPS forces DCD to +V SPACE via the |
| transistor. When the Computer forces a +V SPACE on RTS, |
| the UPS will shut down and turn off. Jumpered pins in |
| the DB9F connector allow for automatic automatic or PNP |
| cable identification by UPS software. |
| |
+-----------------------------------------------------------------+
| |
| Male (pins) Female (holes) |
| DB9 RS-232 PC |
| type connector 1 5 5 1 |
| ---------------- _______________ _______________ |
| Pinout numbering \ . . . . . / \ o o o o o / |
| looking into the \ . . . . / \ o o o o / |
| end of the cable ----------- ----------- |
| 6 9 9 6 |
| |
| NOTE: Solder a wire to the metal shell for use as a FRAME-GND |
| |
+-----------------------------------------------------------------+
+-----------------------------------------------------------------+
| |
| APC 940-1000 Straight Through cable |
| Universal APC serial extension cable for use in conjunction |
| with an APC UPS cable. This cable is verified to work. |
| |
+-----------------------------------------------------------------+
| |
| DB9M to UPS cable Shielded Cable DB9F to Computer |
| ----------------- --- 28AWG ---- ---------------- |
| |
| (SHELL)<----+-------------//-------------+----<(SHELL) |
| | | |
| - - |
| | | | | |
| 1<------------------//------------------<1 DCD |
| | | | | |
| 2<------------------//------------------<2 RXD |
| | | | | |
| 3<------------------//------------------<3 TXD |
| | | | | |
| 4<------------------//------------------<4 DTR |
| | | | | |
| 5<------------------//------------------<5 SG |
| | | | | |
| 6<------------------//------------------<6 DSR |
| | | | | |
| 7<------------------//------------------<7 RTS |
| | | | | |
| 8<------------------//------------------<8 CTS |
| | | | | |
| 9<------------------//------------------<9 RI |
| | | | | |
| - - |
| NOTE: The DB shells are connected to each other via the shield. |
| |
+-----------------------------------------------------------------+
| |
| Male (pins) Female (holes) |
| DB9 RS-232 PC |
| type connector 1 5 5 1 |
| ---------------- _______________ _______________ |
| Pinout numbering \ . . . . . / \ o o o o o / |
| looking into the \ . . . . / \ o o o o / |
| end of the cable ----------- ----------- |
| 6 9 9 6 |
| |
| NOTE: Solder a wire to the metal shell for use as a FRAME-GND |
| |
+-----------------------------------------------------------------+
|
