Hi everybody. In previous posts plc247.com used some PLCs, HMIs to control FUJI-Frenic Series inverters via Modbus-RTU. Today I will continue to guide you to use your PC to control it.
I use USB to RS485 Cable and “Modbus Poll” software to make this project. You can download the software at the end of the article.
Fuji Frenic & PC Wiring Diagram
You connect according to the diagram below, pay attention if the communication distance is long, you need to use a terminal resistor 120Ω
Fuji Frenic Communication Configuration
Below are the communication parameters to be configured:
- H30 = 3 ( Motor Control via RS485)
- Y01 = 1 ( Address No.1)
- Y02 = 0
- Y03 = 2
- Y04 = 2 (baud rate 9600bps)
- Y05 = 0 (8bit)
- Y06 = 1 (Even)
- Y07 = 1 (stop bit = 1)
- Y10 = 0 (Modbus RTU Selection)
- Y99 = 0
Modbus Address Area
Below is the table of Hexa addresses corresponding to the Parameters Group
Register Control
>>> Frequency Reference = S (07H) + 05 = 705 (Hex)
>>> Operation Command = S (07H) + 06 = 706 (Hex)
+ Set 706 = 1 >>> Run Forward
+ Set 706 = 2 >>> Run Reverse
+ Set 706 = 0 >>> Stop Run
Register Monitoring
>>> Output Frequency = M (08H) + 09 = 809 (Hex)
>>> Input Power = 80A (Hex)
>>> Output Current = 80B (Hex)
>>> Output Voltage = 80C (Hex)
Modbus Poll Programming
+ Motor Control Word
+ Frequency Setting Command
+ Read Data Monitoring
Detailed Instruction Video
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Software & Documents Download:
- Download Modbus Poll Software
- Fuji Frenic Series Parameters Manual PDF (Password Extract: plc247.com)
- Fuji Frenic Communication RS485 Manual PDF Download
If you have any difficulties in connecting Fuji Frenic to PC or have any questions to answer, please comment below the article.
Best Regards!
