Liebert GXTMT Series Installation and User Manual
1-3 kVA UPS
Page
16
V2.11
Emerson Network Power
7. Communication Port
RS232 Interface
The following is the pin assignment and description of DB-9 connector.
Pin #
Description
I/O
2 TXD
Output
3 RXD
Input
5 GND
Input
AS400 Interface (Option)
Except for the communication protocol as mentioned above, this series UPS has AS400 card (an
optional accessory) for AS400 communication protocol. Please contact your local distributor for
details. The following is the pin assignment and description of DB-9 connector in AS400 card.
Pin #
Description I/O
1
UPS Fail
Output
2 Summary
Alarm
Output
3 GND Input
4 Remote
Shutdown Input
5 Common Input
6 Bypass
Output
7 Battery
Low
Output
8 UPS
ON
Output
9 Line
Loss
Output
Figure 16.2: DB-9 Interface of AS400
communication protocol
Communication Port