PowerWalker VFI 1000RT LCD Manuel page 40

11. Communication Port
11.1 RS-232 and USB communication ports
EN
To establish communication between the UPS and a computer, connect a
computer to one of the UPS communication ports by using an applicable
communication cable.
NOTE:
Only one of the communication ports can be active at one time. The USB port
has priority over the RS-232 port.
When a communication cable is installed, the power management software
can exchange data with the UPS. The software polls the UPS for detailed
information on the status of the power environment. If a power emergency
occurs, the software initiates the saving of all data and an orderly shutdown
of the equipment
11.2 RS-232 port
The RS-232 port is available for UPS monitoring, control, and firmware
updates. 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 communication port are identified in the
following illustration.
RS-232 communication port pin assignments
Pin Signal name
1
2 Tx
3 Rx
4
5 GND
6
7
8
9
36
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