PowerWalker VFI 1000T LCD - Manual (Page 37)

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11. Communication Port
The communication port is for the monitoring software. A USB port
and an intelligent slot are provided.
11.1 USB
The USB port is compliance with USB 1.1 protocol.
11.2 RS232 Interface(Option)
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
11.3 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