Mitsubishi E700 Series inverter is a cheap but good quality inverter, so it is commonly used in the market. Today thelivingchristmascompany.com will guide you to use the computer to control it via Modbus-RTU RS485.

• PC & Schneider ATV312 “Modbus-RTU”

I use Modbus Poll software (3MB, Download link below the article) and USB to RS485 convert Cable.

Mitsubishi FR E700 Modbus-RTU Wiring Diagram

Mitsubishi FR E700 Modbus Configuration

In order for the inverter to communicate with Modbus-RTU, you need to configure the following parameters:

• Pr117 = 1 (Slave Address)
• Pr118 = 3 (Baudrate 9600)
• Pr119 = 0 (8bit / Stop bit =1)
• Pr120 = 2 (Even)
• Pr121 = 9999
• Pr122 = 9999
• Pr123 = 9999
• Pr124 = 1
• Pr340 = 1
• Pr549 = 1
• Pr79 = 2 (Last setting)

Register for Control

Note: For Mitsubishi E700 Series VFD

“Control Address = Register Address – 40001”

>>> Motor Control Address = 40009 – 40001 = 8

• Set Word 8 = 0000 0000 0000 0010 = 2 for Forward Run
• Set Word 8 = 0000 0000 0000 0100 = 4 for Reverse Run
• Set Word 8 = 0000 0000 0000 0000 = 0 for Stop

>>> Frequency Setting Address = 40014 – 40001 = 13 (dec) = D (hex)

Register for Monitoring

We will read 3 consecutive response data bars starting from register 40201

Output Frequency = 40201 – 40001 = 200 (dec) = C8 (hex)

Modbus Poll Software Configuration

+ Motor Control Word

+ Set Frequency

+ Read Data Response

Detailed Instruction Video

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Software & Documention:

+ Download “Modbus Poll” Software

If you have any questions about the project implementation, please comment below the article.

Best Regards!