Wiring; Wiring Procedure; Selecting Connection Method - Mitsubishi MELSEC iQ-F FX5 User Manual

4.5

Wiring

This section explains the wiring.

Wiring procedure

1.
Select the connection method
Select the connection method suitable to the application. (Page 74 Selecting connection method)
2.
Make arrangements for wiring
Prepare cables required for wiring. (Page 75 Cable)
3.
Turn OFF the PLC power
Before wiring, make sure that the PLC power is OFF.
4.
Wire the communication equipment.
Connect the RS-485 communication equipment. (Page 77 Connection diagram)

Selecting connection method

When using MC protocol 3C/4C frame, connection can be achieved in accordance with RS-232C or RS-485 (RS-422)
communication.
In FX5, it is possible to use a serial port for up-to a maximum of 4 channels simultaneously by using MC protocol.
Depending on each serial port, the available communication and channel number are decided.
In case of RS-232C communication (1:1)
For communication in accordance with RS-232C, it is 1-to-1 connection. Make sure that the total extension distance is 15 m or
less.
Personal computer
In case of RS-485 (RS-422) communication (1:N)
For communication in accordance with RS-485 (RS-422), up to 16 PLC Slave Nodes can be connected.
Make sure that the total extension distance is 1200m or less. (When using built-in RS-485 port or FX5-485-BD, 50m or less)
Personal computer
RS-232C/RS-485
communication
converter
FX-485PC-IF
4 MC PROTOCOL
74
4.5 Wiring
FX5 PLC
RS-232C
communication
equipment
FX5 PLC
Station No.0
RS-485
communication
equipment
FX5 PLC
Station No.15
RS-485
communication
equipment