CertaUPS C400R-010-B, Руководство по установке

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10. Communication port
10.1 RS-232 and USB communication ports
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 any 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 UPS and power environment. If a power emergency occurs the
software initiates the saving of all data and an orderly shutdown of the
equipment.
Pin
Signal
name
Function
Direction from the
UPS
1 Unused Not applicable
2 TX Transmit to external device Out
3 Rx Receive from external device In
4 Unused Not applicable
5 GND
Signal common
(tied to chassis)
Not applicable