Hello everyone, PLC Mitsubishi FX5U is a new generation PLC integrated with many modern features such as Ethernet, RS485, Analog communication portsā¦ And it also integrates Modbus-RTU Communication Method
- PLC Keyence “Modbus RTU” Danfoss FC302 Tutorial
- Mitsubishi FX5U “Modbus RTU” PowerFlex525 VFD Tutorial
Today plc247.com will guide you to use FX5U to control Danfoss FC302 via Modbus-RTU (Danfoss FC302 inverter also has built-in RS485 port)
Mitsubishi FX5U & Danfoss FC302 “Wiring Diagram”
Note: If the communication distance is longer than 20m, a 120Ī© terminal resistor should be used
Danfoss FC302 Modbus-RTU Configuration
In addition to the basic parameters of the inverter (Frequency, current, voltageā¦) then we need to set the communication parameters as the table below to be able to control Danfoss FC302 with Modbus RTU
Danfoss FC302 Register for Control
>>> VFD Control Command = C34F (hex)
+ Set Word C34F = 47C (hex) >>> Run Forward
= 847C (hex) >>> Run Reverse
+ Set Word C34F = 43C (hex) >>> Stop
+ Set Word C34F = 4BC (hex) >>> VFD Reset
>>> Speed Reference Address = C359 (hex)
+ Speed Reference = 0 to 16384(dec) ~ (0 to 100%)
Danfoss FC302 Registers for Monitoring
Note: Danfoss FC302 Address = “(Table Address*10) – 1“
+ Voltage Output Address = 16119 (dec)
+ Frequency Output Address = 16129 (dec)
+ Current Output Address = 16139 (dec)
+ Speed Output Address = 16169 (dec)
Mitsubishi FX5U Modbus RTU Setting
We need to configure Modbus communication parameters in PLC same as Danfoss FC302
FX5U PLC Programming
+ Read / Write Distribution
+ Speed Setting Command
+ VFD Control Run
+ Read Data Response
Detailed Instruction Video
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Related Software and Documents
>>> Download GX Works3 Mitsubishi Software
>>> Download Danfoss FC302 Manual PDF
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