Siemens S7-1200 “Modbus RTU” Yaskawa V1000 Tutorial

In the previous post, plc247.com showed you how to use PLC S7-1200 to communicate Modbus-RTU with LS-iG5A inverter.

• S7-1200 PLC Modbus-RTU LS iG5A VFD
• Mitsubishi FX3U & Yaskawa V1000 “Modbus” Tutorial

Today I would like to continue to share with you the S7-1200 PLC connections with Yaskawa-V1000 inverters using the S7-1200 CB1241 RS485 Module

S7-1200 CB1241 Connection Diagram with LS iG5A

Please connect according to the following diagram:

Yaskawa V1000 Inverter Parameter Setting

You set the parameters according to the table below

Register Address Write Command

>>> Motor Control Run Address = 40001 + 1 = 40002 (dec)

+ Set 40002 = 0000.0000.0000.0001 (Bin) = “1” >>> Forward Run

+ Set 40002 = 0000.0000.0000.0010 (Bin) = “2” >>> Reverse Run

+ Set 40002 = 0000.0000.0000.0000 (Bin) = “0” >>> Stop

>>> Motor Frequency Write Address = 40001 + 2 = 40003 (dec)

Register Address Data Response

>>> In the project I use the instruction to read feedback data from the inverter 3 consecutive registers will start with address:

First Address Read = 40001 + 36 (24Hex) = 40037 (dec)

S7-1200 CB 1241 Configurator

Modbus Block Creat

S7-1200 Write Programs

+ Read and Write Distribution

+ Communication Configurator

+ Frequency Write

+ Control Run Command

+ Data Output Read

Video Tutorial

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Document and Software:

• Download Yaskawa V1000 VFD Manual PDF (Password: plc247.com)
• Download Tia Portal V15.1 for PLC S7-1200

Thanks and Best Regards!