Omron MX2 Series - RS485 Terminal Arrangement and Connection

8 Communications Functions
8 - 4
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
8-2 RS485 Terminal Arrangement and
Connection
The communications terminals are arranged as follows.
USB port is for computer
use only. RS422 (RJ45
modular connector) port
is for Digital Operator
use only.
Terminating resistor
selector switch
ON
OFF
(Factory default)
*1
*1. If the communications are unstable, install a terminating resistor appropriate to the impedance of the cable to
each cable end. The resistance of the terminating resistor built into this inverter is 120 .
RS485 terminal
SP SN
SP
SN
SN
(No.2)
120 
120 
3G3MX2 (No.1)
3G3MX2 (No.n)
SP
SN
SP
EA
7
6
5
4
3
2
1
L
PLC
P24
P24S
SP
SN
H
O
OI
L
EO
AM
CM2
12
11