
IV432E Rev.01 SIEL S.p.A.
Installation and user manual
Date of issue: 2021-05-05
Pag.
43
of
50
+ FR
Appendix 5 RS485 communication port definition
Definition of port
Connection between the Device
’
s RS485 port and UPS RS485 port.
device(RJ45)
UPS(RJ45)
Description
Pin 1/5
Pin 1/5
485+
“
A
”
Pin 2/4
Pin 2/4
485 -
“
B
”
Pin7
Pin7
+12Vdc
Pin8
Pin8
GND
Available function of RS485
ƹ
Monitor UPS power status.
ƹ
Monitor UPS alarm info.
ƹ
Monitor UPS running parameters.
ƹ
Timing off/on setting.
ƹ
Battery environment temperature monitoring.
ƹ
Charging voltage modulation depending on batteries temperature
Communication data format
Baud rate ---------- 9600bps
Byte length ---------- 8bit
End bit ---------- 1bit
Parity check ---------none
CAUTION!
USB, RS232 and RS485 interface cannot be used at the same time,
you can only use one of them at one time.
RS485 port pin7 is 12Vdc!