DVP 14SS2 “Modbus RTU” DELTA MS300 VFD

Hello everyone. Today plc247.com will guide you to use PLC Delta 14SS2 to control DELTA MS300 inverter via Modbus-RTU RS485 communication standard.

The DVP-14SS2 PLC has built-in RS485 port, and most of Delta’s other PLCs are integrated. With the MS300 inverter, it supports many communication standards including Modbus-RTU .

DELTA DVP14SS2 & MS300 VFD “Wiring Diagram”

DELTA MS300 Modbus-RTU Setting

In addition to the basic parameters of the inverter installed according to the motor, we need to set the following parameters so that the inverter can be controlled by Modbus-RTU:

• P00.20 = 1 (Frequency Control via RS485)
• P00.21 = 2 (Motor Control via RS485)
• P09.00 = 1 (Address Slave = 1)
• P09.01 = 9.6 (Baudrate = 9600bps)
• P09.02 = 0
• P09.03 = 1.0 (Time Com. Err)
• P09.04 = 14 (Modbus-RTU 8/E/1)

Control Register Address

+ Motor Control Address = 2000 (hexa)

• Set Word 2000 (hex) = 18 >>> Motor Forward Run
  = 34 >>> Motor Reverse Run
  = 1 >>> Motor Stop

+ Frequency Setting Address = 2001 (hexa)

Monitoring Register Address

• Output Frequency = 2103 (Hexa)
• Output Current = 2104 (Hexa)
• Output Voltage = 2106 (Hexa)

DVP-14SS2 Modbus-RTU Configuration

WPLSoft supports automatic configuration of Modbus-RTU communication, you can refer to the video below the article

DVP 14SS2 Programming

+ Modbus-RTU Setting

+ Automatic Read/Write Command

+ Frequency Setting Command

+ Motor Control Command

+ Data Response Reading

Detailed Instruction Video

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Recommended software and documentation:

• WPL.Software for PLC Delta Programming
• Delta MS300 VFD Manual PDF

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