Appendix 1 Communication Port
RS-232 Communication Mode
Port description male)
NC
RXD
TXD
NC
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9
GND
Pin 2: receiving terminal;
Pin 3: transmitting terminal;
Pin 5: common;
Other pins: unconnected.
Connection relationship between RS-232 port of computer and
RS-232 port of UPS
Computer --------------------- UPS
RDX
pin 2
<------------------- TX
pin 3
TDX
pin 3
--------------------> RX
pin 2
GND
pin 5
--------------------- GND
pin 5
RS-232 communication mode provides the following functions:
Monitor the current power supply state of UPS;
Monitor the current alarm information of UPS;
Monitor the current running parameters of UPS;
Time the ON/OFF control of the UPS, and set system
parameters.
Appendix 1 Communication Port 49
E1-20010916-C-1.0
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