Form No. 003-2282 Rev G
13
5
4
3
2
1
9
8
7
6
2.4.
Communication Port Explanation
The Communication port on the UPS provides RS232 protocol to communicate
with UPS software for remote monitoring.
Available optional interfaces cards, which contains R2E (2
nd
RS232, SC-RS232),
RSE (RS485, SC-RS485), USE (USB, SC-USB), DCE (Dry Contact, SC-
Contact/EPO), as well as SNMP card (SC-SNMP1), can be added according to
need. However, the R2E card, RSE card and USE card cannot be used
simultaneously.
The bundled software of the UPS 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.
When the optional interface cards are used together with the onboard RS232 port,
during communication the EPO signals (SC-Contact/EPO) will get the highest
priority in control command, then the SNMP/WEB card (SC-SNMP-1), then the
shutdown command at the DCE card, R2E, RSE and USE. Finally the onboard
RS232 port will get the lowest priority.
2.4.1 RS232
2.4.1.1.1. The RS232 interface settings
The RS232 interface shall be set as follows:
Baud Rate
9600 bps
Data Length
8 bits
Stop Bit
1 bit
Parity
None
2.4.1.1.2. The Pin Assignments of true RS232 type
The Pin Assignments of true RS232 type are illustrated as follows:
Pin 3: RS232 Rx
Pin 2: RS232 Tx
Pin 5: Ground
