DELTA DVP 14SS2 “Modbus RTU” ATV312 Schneider VFD

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 >>> 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:

• ATV312 Schneider Parameters Setting PDF
  Communication Manual PDF
  Modbus Address list PDF
• WPLSoft for DELTA DVP PLC Programming

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Best Regards!