Rs-232 Port - IBM 11000 VA LCD 5U Installation And Maintenance Manual

RS-232 port

To establish communication between the UPS and a computer, connect one end of
the serial communication cable that comes with the UPS to the RS-232 port on the
UPS. Connect the other end of the serial cable to the RS-232 port on a computer.
The cable pins for the RS-232 connector are identified in the following illustration.
The pin functions are described in Table 11.
Note: Unused pins must remain free on all models.
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11000 VA UPS and 11000 VA EBM: Installation and Maintenance Guide
5
9
4
8
3
7
2
6
1
Table 11. RS-232 connector pin assignments
Pin Signal name
1
2 Tx
3 Rx
4
5 GND
6
7
8
9
RS-232
connector
Function
Unused
Transmit to external device
Receive from external device
Unused
Signal common (tied to
chassis)
Unused
Unused
Unused
Unused
Direction from the UPS
Not applicable
Out
In
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable