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Delta HMI “Modbus RTU” Danfoss FC302 Tutorial

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Hello friends, Danfoss FC302 Inverter is applied in automatic lines such as food processing, beverage, mixer, extruder, agitator, crusher, conveyor, conveyor, fan, crane, etc. … accounted for more than 95% of the inverter market share in beer, soft drink, food and dairy production lines.

Danfoss FC302 inverter supports all basic types of inverter connection, it also has a built-in RS485 port for convenient control by Modbus RTU communication. Today will guide you to use HMI Delta DOP-107EV to control Danfoss FC302 by Modbus-RTU (RS485) Communication.

Delta DOP-107EV & Danfoss FC302 “Wiring Diagram”

+ Note: Use a 120Ω Terminal Resistor if the communication distance is long

Danfoss FC302 Modbus Parameters Setting

To be able to control Danfoss FC302 inverter with Modbus-RTU, in addition to the basic parameters, we need to install the following communication parameters

Danfoss FC302 Modbus Registers Address

+ Control Word Address = C34F (hex)

>>> Set Word “C34F” = 1148 (dec) or 47C (hex) >>> Run Forward
= 33916 (dec) or 847C (hex) >>> Run Reverse
= 1084 (dec) or 43C (hex) >>> Stop
= 1212 (dec) or 4BC (hex) >>> VFD Reset

+ Frequency Setting Address = C359 (hex)

  • Reference Set = 0 to 16384(dec) ~ (0 to 100%)

+ Voltage Output Address = 16119 (dec) = 3EF7 (hex)

+ Frequency Output Address = 16129 (dec) = 3F01 (hex)

+ Current Output Address = 16139 (dec) = 3F0B (hex)

+ Speed Output Address = 16169 (dec) = 3F29 (hex)

Delta HMI Modbus-RTU Configuration

In order for HMI Delta to control Danfoss FC302 with Modbus-RTU, we need to set the communication parameters of the HMI to be the same as that of the VFD

HMI Delta Modbus Exampe

+ Control Panel

+ VFD Ready Status

+ VFD Alarm Status

+ VFD Reset Command

+ Speed Setting Command

+ Forward Run Command

+ Reverse Run Command

+ Stop Command

+ Output Frequency Read

+ Output Current Read

+ Output Voltage Read

+ Output Speed Read

Project Video Tutorial


Software and Documents

>>> Delta DOP Software Free Download
>>> Danfoss FC302 Inverter Manual PDF Download

(Password Extract:

If you need assistance in using Delta DOP-107EV to control Danfoss FC302, please comment below the article, will reply to you as soon as I read the comments.

Best Regards!

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