36
NOTE
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:
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The communication speed of the RS232 port is fixed at 2400 bps.
RS-232 and USB Communication Ports
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To establish communication between the UPS and a computer, connect your
computer to one of the UPS communication ports using an appropriate
communication cable (not supplied). See Figure
17, 18
for the communication port
locations.
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When the communication cable is installed, 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. The cable
pins for the RS-232 communication port are identified in Figure
19
and the pin
functions are described in Table 9.
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Figure 19
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RS-232 Communication Port (DB-9 Connector)
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Table 9.
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RS-232 Communication Port Pin Assignment
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Pin Number Function Definition Direction from the UPS
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1、4、6、7、8、9 No use --
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2 R×D(Transmit to external device) Out
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3 TxD(Receive from external device) In
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5 GND(Signal common) --