Omron SYSDRIVE MX2 SERIES - RS-485 Port Specifications and Connection

6-2
6-2 RS-485 Port Specifications and Connection
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
6
Communication Function
6-2 RS-485 Port Specifications and
Connection
Each communication connector pin is shown below.
PSC P24S1 SCS3 S2S5 S4S6
RS−
S7
P2 P1AM PCFI SCFS FVRP
RS+
MP
RS-485 terminal
RS+ RS−
External equipment
(master)
RS−
RS+
RS+ RS−
RS+ RS−
200
Ω
3G3MX2 (No.2) 3G3MX2 (No.3) 3G3MX2 (No.n)
3G3MX2 (No.1)
The USB port is
designed exclusively for
communication with a
PC. The RS-422 (RJ45
modular connector) port
is designed exclusively
for communication with
the Digital Operator.
Modbus-RTU
Terminal Resistor
selector switch
Note. If communication is unstable, install on both ends
of the communication cable a Terminal Resistor
matching the characteristic impedance of the
cable.
The built-in Terminal Resistor inside the Inverter
is 200 Ω.