Communications; Communications Interface Port - Liebert GXT2U User Manual

7.0 C
OMMUNICATIONS
7.1 C
OMMUNICATIONS
The Liebert GXT2U UPS has a standard DB-9 serial port female con-
nector located on the rear of the UPS unit. Several signals are pro-
vided on this port and are assigned as follows:
Pin
1 Low Battery (open collector)
2 UPS TxD (typical RS-232 levels)
3 UPS RxD (typical RS-232 levels)
4 Remote Shutdown (5-12VDC, 10-24 mA max); battery operation
5 Common
6 Remote Shutdown (short to pin 5); all modes of operation
7 Low Battery (open emitter)
8 Utility Fail (open emitter)
9 Utility Fail (open collector)
Pin Assignment
6 7
1 2
* Maximum voltage and current on pins 1, 7, 8, and 9 is 60VDC; 10.0 mA.
I
NTERFACE
Assignment Description
8 9
3 4 5
P
ORT
Collector to Emitter*
19

Communications

Open
(+)
Collector
330 Ohms
Open
(-)
Emitter
DISCONTINUED
PRODUCT