KOLFF Black 1K, User Manual

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11. Communication port
11.1 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
11.2 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 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
DB-9 Interface of AS400 communication protocol