Omron SYSDRIVE 3G3EV SERIES User Manual page 32

Example of Connecting Remote I/O Slave Units
Connect the Remote I/O Master Unit (C500-RM201 or C200H-RM201) to Remote I/O
Slave Units (devices) as described below.
RM: Master Unit
RS: Slave Unit (device)
Connect the Remote I/O Master Unit first, then continue wiring in order.
Do not connect a positive terminal to a
negative terminal.
The Remote I/O Master Unit cannot be
directly connected to more than one
Remote I/O Slave Unit.
Wiring cannot be branched from a Remote
I/O Slave Unit.
Chapter 3