APC BackUPS Pro

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connector or cable wiring APC Part# 940-0095B. Should work with APC PowerChute Pro software.

9 pin D-SUB male connector layout 9 pin D-SUB male connector to the UPS

9 pin D-SUB female connector diagram 9 pin D-SUB female connector to the computer

| UPS Signal Name | DB-9 Male (UPS end) | DB-9 Female (PC end) | PC Signal Name | |—————|———–|—————|————————————————| | RX / Shutdown | 1 | via R=4k to 3 | TxD, also connected via R=4kOhm to pin 1 (DCD) | | TX / AC Fail | 2 | 2,9 | RxD, RI | | Common | 4,9 | 5 | GND |

At the PC end pins 4,6,8 (DTR, CTS, DSR) shorted.

1-----------------^^^---\-----------3 
                   R     \-----^^^--1 
                                R 
2-----------------------------------2 and 9 (shorted) 
4----\ 
      |---------------------------- 5 
9----/                            
                                    4 and 8 and 6 (shorted) 
R=4KOhm. 

Another variant:

Signal Computer                  UPS 
            DB9F                     DB9M 
      DTR    4   ----* 
      CTS    8   ----| 
      DSR    6   ----| 
      DCD    1   ----* 
      GND    5   ---------------*----  4  Ground 
                                | 
                                *----  9  Common 
      RI     9   ----* 
                     | 
      RxD    2   ----*---------------  2  On Battery 
      TxD    3   ----------[####]----  1  Kill UPS Power 
                           4.7K ohm 

Notes

References

Category:Miscellaneous Cables

 

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