Communication; Rs-232 Port - ABB 8408608 User Manual

30 A B B U P S P R O D U C T S A N D S O L U T I O N S
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5 Communication

A USB and an RS-232 port are available to enable
the communication between the UPS and a
remote computer/ station. Only one
communication port can be active at a time
and the priority is given to the USB port.
Once the communication cable is installed,
the power management software can exchange
information with the UPS. The software collects
information from the UPS and indicates the
status of the device, the power quality of the
mains and the battery autonomy of the units.
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5 .1 RS-232 port

The UPS has an RS-232 port for UPS monitoring,
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30 RS-232
control and firmware updates. To establish
Communication Port
communication between the UPS and a computer,
(DB-9 Connector)
connect one end of the serial communication
cable to the RS-232 port on the UPS and the other
end to the RS-232 port of a computer.
The cable pins for the RS-232 communication
port are described in "Figure 30" and "Table 11".
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30
If there is a power failure and a predicted
shutdown of the UPS due to low battery
autonomies, the monitoring system can save
the load data and initiate shutdown of the
equipment connected to the UPS.
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Table 11: Communication port pin assignment
PIN Signal Name Function
1 DCD Battery low signal
Transmit to
2
TxD
external device
Receive from
3 RxD
external device
PnP from
4 DTR
external device
5 GND Signal common
6 DSR To external device
7
RTS No connection
8 CTS On battery signal
9 RI V power
DC
Direction
from UPS
Out
Out
In
In
--
Out
In
Out
Out