Major Procedures Until Operation - Mitsubishi FX3U Series User Manual

FX Series Programmable Controllers
3U
User's Manual - MODBUS Serial Communication Edition
1.2

Major Procedures until Operation

The flow chart below shows the procedure for setting up the MODBUS serial communication network:
MODBUS Serial Communication
Outline
Check communication specifications.
Determine system configuration and selection.
Perform wiring.
Turn ON power.
Set up PLC communication
Check communication status
Create programs.
Based on the SD/RD lamp lighting status and the
contents of error check devices, verify that
communication is functioning correctly.
If there are any problems with communication,
refer to the troubleshooting chapter (Chapter 12).
Practical program examples
*1. For the corresponding programming tool to PLC connection method, refer to the "Programming
Communication" Chapter of the FX Series Programmable Controller User's Manual - Data
Communication Edition, or the corresponding programming tool manual.
For details on operating procedures, refer to the corresponding programming tool manual.
Refer to Chapter 1.
Refer to Chapter 2.
Refer to Chapter 3.
Refer to Chapter 4.
Refer to Chapter 5.
Refer to Chapter 6.
Refer to Chapter 7,8,9,10.
Refer to Chapter 11.
Program examples for both Master and Slave are shown
1.2 Major Procedures until Operation
Outline of system
• Applicable PLC versions
• Applicable programming tools
Communication specifications
• Communication protocol
• Number of Slaves
System configuration
• Select communication equipment
Wiring procedure
• Wiring example
Programming tool
*1
Connect PLC.
MODBUS serial communication setup in PLC
• Create communication parameter setting programs
Communication
• Check related special data registers and
auxiliary relays.
Master and Slave communication setup
• Create programs using ADPRW command
• Basic program
1 Outline
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