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DELTA DVP 14SS2 “Modbus RTU” ATV312 Schneider VFD

Written by plc247.com

Hello everyone.
Continuing with the series of articles on how to use PLC Delta DVP to control the inverter via the Modbus-RTU RS485 communication standard, today plc247.com will guide you to control an inverter originating from Europe: Schneider ATV312 VFD.

Schneider’s ATV312 inverter has a built-in RJ45 port (Ethernet Port) that supports RS 485 . Communication.

Schneider ATV312 & DVP 14SS2 “Wiring Diagram”

Note: If communication distance > 50m, use end resistor 100/120-Ohm

Schneider ATV312 Modbus RTU Configuration

In addition to the basic parameters of the inverter (frequency, voltage, current, acceleration, deceleration…) we need to set the communication parameters as follows.

+ “COM” Menu

  • Add = 1 (Slave No.1)
  • tbr = 9.6 (baudrate)
  • tF0 = 8E1 (Communication Config)
  • tt0 = 3.0 (timer Com. error check)

+ “CtL” Menu

  • LAC = L3
  • Fr1 = Mdb (Modbus)
  • Fr2 = Mdb
  • CHCF = SEP
  • Cd1 = Mdb
  • Cd2 = Mdb
Register for Control

+ Motor Control Address = 8501 (decimal) = 2135 (hexa)

  • Set Word 2135 (hex) = 128 >>> System Reset
    = 6 >>> System Start
    = 15 >>> Forward Run
    = 2063 >>> Reverse Run
    = 4111 >>> Motor Stop

+ Frequency Setting Address = 8502 (decimal) = 2136 (hexa)

Register for Monitoring

+ Output Frequency Address = 3202 (decimal) = C82 (hexa)

+ Frequency Reference Address = C83 (hexa)

+ Output Current Address = C84 (hexa)

+ Motor Torque Address = C85 (hexa)

PLC DELTA DVP 14SS2 Comunication Configuration

You use WPLSoft software and choose the communication configuration as shown below:

The software will automatically create the program as below:

PLC Programming

+ Set Frequency Command

+ Control System & Motor

+ Read Data Response

Video Setup & Test Program

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Software & Documents Reference:

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If you have any difficulties in using the DELTA PLC to control the Schnerder ATV312 inverter via Modbus-RTU, please comment below the article. plc247.com will reply to you as soon as possible.

Best Regards!

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