Hello!
The Omron CP1H PLC and Delta VFD-M Inverter are devices that are widely used in small machines and transmission lines. Today plc247.com will guide you to connect them together via Modbus-RTU Communication Standard (RS485)
Because the article is quite long, you should pay attention to read each step in detail and do not skip steps 😀
PLC CP1H and Delta VFD-M Wiring Diagram
Setting the parameters of the VFD-M inverter
You make settings with basic communication parameters including Pr00, Pr01, Pr88, Pr89, Pr92, Pr157
+ Pr00: 03 – Set Frequency by RS485 . Port
+ Pr01: 04 – Start/Stop control by RS485 . port
+ Pr088: 01 – Modbus Slave No.1
+ Pr089: 01– Baud Rate 9600
+ Pr092: 04 – MODBUS RTU Mode ( Even, 8bit, Stop bit =1 )
+ Pr157: 01 – Modbus Mode Selection
Modbus Address List
Controllable addresses
Addresses used in the project:
- 2000H (Coltrol Run): Forward Run ( 0000.0000.0001.0010 = 18 Dec ), Reserved Run ( 0000.0000.0010.0010 = 34 Dec ), Stop ( 0000.0000.0000.0001 = 1 Dec )
- 2001H ( Frequency Setting)
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Status Monitor (Only Read)
We read the following 3 main parameters:
- 2103H – Output Frequency
- 2104H – Output Current
- 2106H – Voltage
Omron CP1H . PLC Communication Configuration
Sample Program (Successfully Run)
+ Distribute Write/Read Data
+ Control Run & Running frequency setting
+ Frequency write command from PLC to VFD
+ Start/Stop Motor control and Direction of rotation
+ Distribute read 3 Data
+ Command Read Data
+ Receive Data on successful reading
Detailed Instruction Video
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+ Delta VFD-M Document >>> Download Here
So I have finished guiding you how to connect Omron CP1H & Delta VFD-M. If you have any questions, please comment below the article.
Thanks and Best Regards!
