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Mitsubishi HMI “Modbus RTU” FR-E720 Inverter Tutorial

Written by plc247.com

Hello everyone!
Mitsubishi’s equipment is used extremely commonly in the field of automation such as PLC, HMI, VFD… low price, popular quality make Mitsubishi a favorite used brand in the world.

Today plc247.com will guide you to use the Mitsubishi GT2505-VTBD HMI to control the Mitsubishi FR-E700 Seiries inverter through Modbus-RTU (RS485)

Mitsubishi GT2505-VTBD & FR-E720 “Wiring Diagram”

Note: Mitsubishi FR-E700 Series inverters have built-in RS485 port (RJ45 Port.) depending on whether the HMI model supports RS485 port or not to support control by Modbus RTU protocol (All GOT2000 GT-Series HMIs are available). support)

Mitsubishi FR-E720 Modbus Parameters Setting

In order for GT2505-VTBD and FR-E720 VFD to be connected by Modbus-RTU, we need to set the following communication parameters for the inverter

+ 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)

Mitsubishi FR-E720 Modbus Registers Setting

>>> VFD Control Address = 40009 (dec)

  • Set Word 8(hex) = 0000 0000 0000 0010 = 2 >>> Forward Run
  • Set Word 8(hex) = 0000 0000 0000 0100 = 4 >>> Reverse Run
  • Set Word 8(hex) = 0000 0000 0000 0000 = 0 >>> Stop

>>> Set Frequency Address = 400014 (dec)

>>> Output Frequency Address = 40201 (dec)
>>> Output Current Address = 40202 (dec)
>>> Output Voltage Address = 40203 (dec)

Mitsubishi GT2505-VTBD “Modbus RTU” Configuration

How did we set the Modbus parameters for the FR-E720 inverter, the same setting for the GT2505-VTBD HMI

HMI Modbus Example

+ Control Panel Design

+ Frequency Setting Command

+ Forward Run Command

+ Reverse Run Command

+ Stop Run

+ Output Frequency Read

+ Output Current Read

+ Output Voltage Read

Video Tutorial

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References

+ Mitsubishi HMI Programming Software Download
+ Mitsubishi FR E720 Manual PDF Download

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