Westermo RM-115S User Manual
Page 6
115S Serial I/O Module
User Manual
Page 6
June 2011
Figure 1-1: 115S unit with significant parts labeled.
Two ports allow configuration and communications on the 115S. The RS232 port is
intended for configuration. The RS485 port allows the unit to be in a multi-drop
configuration.
Overvoltage protection and supply monitoring is provided to minimize the risk of failure
due to faulty connections or supply surges.
I/O connector
Status LEDs
RS485 and
power connector
RS232 configuration
connector
Address switches
DIN rail mount
Analog
configuration
access panel
Power
OK
Transmit
Receive
RS485
termination
switch
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