Chapter 5 - Communications
UPStation GXT 3x1
Page 18
(06/02)
5.5
Communications Interface Port
The UPStation GXT 3x1 UPS contains a standard DB-9 socket located on the rear of the UPS unit. Several signals are
provided on this port and are assigned as follows:
PIN
ASSIGNMENT DESCRIPTION
1
Low Battery (open collector)
2
UPS TxD (typical RS-232 levels)
3
UPS RxD (typical RS-232 levels)
4
Remote Shutdown (5-12V); battery operation
5
Common
6
Remote Shutdown (short to pin 5) any mode
7
Low Battery (open emitter)
8
Mains Fail (open emitter)
9
Mains Fail (open collector)
PIN ASSIGNMENT
COLLECTOR TO EMITTER*
*Maximum voltage and current on pins 1,7,8,9 is 80V DC; 10.0 mA.
CAUTION:
TO MAINTAIN SAFETY (SELV) BARRIERS AND FOR ELECTROMAGNETIC COMPATABILITY,
SIGNAL CABLES SHOULD BE SEGREGATED AND RUN SEPARATE FROM ALL OTHER POWER CABLES, BY
25mm WHERE APPLICABLE.
