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3.3 Communication Port Explanation
The UPS is equipped with a true RS-232 and USB communication port as
standard to provide communication with bundled UPS monitoring software for
remote monitoring of the UPS using a PC.
In addition, there are six optional interface cards available to meet various
communication needs: USB, EPO/ROO, DCE (dry contact relay card), R2E,
USE, and an SNMP/Web card. (Please see Chapter 8.)
All communication ports including optional cards can be active and used
simultaneously to monitor the UPS status. However, only one communication
interface at a time (the one with the highest priority) can control the UPS. The
priorities of these communication interfaces are as follows (highest priority first).
1) EPO/ROO input port
2) Optional interface card
3) USB
4) RJ11/RJ45 Communication surge protection
5) RS-232
3.3.1 True RS-232
The RS-232 interface must be configured as follows.
Baud Rate
2400 bps
Data Length
8 bits
Stop Bit
1
Parity
None
Pin Assignments:
3.3.2 EPO/ROO
Pin Assignments:
Pin 3: RS-232 Rx
Pin 2: RS-232 Tx
Pin 5: Ground
Function setting
：
1. EPO NC
Shutdown UPS (default)
2. EPO NO
Shutdown UPS
3. ROO NC
Start-up UPS
4. ROO NO
Start-up UPS
(this function setting by setting tool)
