11. Communication Port
11.1 RS232 Interface
The following is the pin assignment and the description of DB-9 connector at
the rear of the UPS.
Pin #
Description
I/O
2
TXD
Output
3
RXD
Input
5
GND
Input
11.2 AS400 Interface (Optional)
In addition to the communication protocol, mentioned above, this UPS series
has AS400 card (an optional accessory) for AS400 communication protocol.
This interface provides true relay contact output to peripheral devices. The
following is the pin assignment and description of DB-9 connector in AS400
card.
Fig. 10.1: Pin assignment of the DB-9 interface of AS400 Protocol
Please contact your local distributor for details.
Pin #
Description
I/O
Pin #
Description
I/O
1
UPS Fail
Output
6
Bypass
Output
2
Summary Alarm
Output
7
Battery Low
Output
3
GND
Input
8
UPS ON
Output
4
Remote Shutdown
Input
9
Line Loss
Output
5
Common
Input
