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16. Communication Port
16.1 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
16.2 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
