3.3. Communication Port Explanation
The Communication port on the UPS provides
true RS232 type communication with the UPS
software to remotely monitor the power and
UPS status.
With optional interface cards, including R2E(2
nd
RS232 plus EPO), RSE(RS485 plus EPO),
USE(USB plus EPO), DCE(Dry Contact plus
EPO), as well as SNMP/ card, you may
combine them according to your demand.
However, the R2E card, RSE card and USE
card are prohibited to be used simultaneously.
The bundled UPS software is compatible with
many operating systems such as Windows 98,
& 2000, ME, NT and XP. For other applications
like Novell, NetWare, Unix, Linux, please
contact your local distributor for a proper
solution.
When the optional interface cards are used with
onboard RS232 port for communication, the
shutdown command for the DCE card & also
the EPO signals will get the highest priority in
control command, then the SNMP/WEB card,
then R2E, RSE and USE get the lowest priority.
Highest Priority (in descending order),
1) EPO input port
2) Optional Interface card
3) RS232
3.3.1. EPO (Emergency Power Off)
The Pin assignments of the EPO Input port are:
1 2
1 EPO+
2 Ground
To enable the EPO function, please short Pin 1
& 2.
3.3.2. RS232 Port Descriptions
The RS232 interface shall be set as follows:
Baud Rate 2400 bps
Data Length 8 bits
Stop Bit 1 bit
Parity None
The Pin Assignments of the true RS232 port
are illustrated as follows:
Pin 3: RS232 Rx
Pin 2: RS232 Tx
Pin 5: Ground
1
2
3
4
5
6
7
8
9
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