Apc UPS control system Manual de usuario descargar pdf (Pagina 149)

BackOﬃce ES:

The BackUPS ES has a straight through serial cable with no identiﬁcation

on the plugs. To make it work with apcupsd, specify the UPSCABLE

940-0119A and UPSTYPE backups. The equivalent of cable 940-0119A

is done on a PCB inside the unit. Thanks to William Stock for supplying

us with the information about the straight through cable, the PCB, and the

following diagram:

computer ----------- BackUPS-ES -----------------

DB9-M DB-9F

pin signal pin

4 DSR -> 4 --+

| diode resistor

6 DTR -> 6 --+---->|----/\/\/\---o kill power

1 DCD <- 1 --+

2 RxD <- 2 --+----------------+--o low battery

7 RTS -> 7 --------+--/\/\/\--+

+--/\/\/\--+

8 RI <- 8 --+----------------+--o on battery

9 CTS <- 9 --+

5 GND --- 5 ----------------------o ground

3 TxD 3 nc

BackUPS ES and CS in Serial mode with Cable 940-0128A:

Though these UPSes are USB UPSes, APC supplies a serial cable (typically

with a green DB9 F connector) that has 940-0128A stamped into one side of

the plastic serial port connector. The other end of the cable is a 10 pin RJ45

connector that plugs into the UPS (thanks to Dean Waldow for sending me a

cable!). Apcupsd version 3.8.5 and later supports this cable when speciﬁed as

UPSCABLE 940-0128A and UPSTYPE backups. However, running

in this mode much of the information that would be available in USB mode

is lost. In addition, when apcupsd attempts to instruct the UPS to kill the

power, it begins cycling about 4 times a second between battery and line.

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Apc UPS control system Manual de usuario Pagina 149