Hello friends!
In addition to communication control types such as I/O, Analog, most inverters support control by Modbus-RTU communication to help long communication distances and save wires.
Today plc247.com will guide you to use Siemens S7-200 PLC to control Mitsubishi FR-E700 Series inverters through Modbus-RTU protocol in the simplest and easiest way.
Siemens S7-200 & Mitsubishi FR-E700 Wiring Diagram
Below is the RS485 communication connection diagram between Siemens S7-200 PLC and Mitsubishi FR-E700 inverter:
Mitsubishi FR-E700 Modbus Parameters Setting
In order for the Mitsubishi FR E700 inverter to be controlled by Modbus-RTU communication protocol, we need to set the following parameters:
+ Pr117 = 1 (Slave Address)
+ Pr118 = 3 (Baudrate 9600)
+ Pr119 = 0 (8bit, stop bit = 1)
+ Pr120 = 2 (Even)
+ Pr121 = 9999
+ Pr122 = 9999
+ Pr123 = 9999
Mitsubishi FR-E700 Modbus Registers Address
>>> Frequency Setting Address = 40014 (dec)
>>> VFD Control Address = 40009 (dec)
- Forward Run >>> Set 40009 = 0000.0000.0000.0010 = 2
- Reverse Run >>> Set 40009 = 0000.0000.0000.0100 = 4
- Stop command >>> Set 40009 = 0000.0000.0000.0000 = 0
+ Output Frequency Address = 40201 (dec)
+ Output Current Address = 40202 (dec)
+ Output Voltage Address = 40203 (dec)
Siemens S7-200 Modbus Example
+ Read/Write Distribution
+ S7-200 Modbus Configuration
+ Frequency Write Command
+ VFD Start/Stop Control
+ Read Data Monitoring
Project Video Tutorial
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References
+ Download Siemens STEP7 MicroWIN V4.0 SP9
+ Mitsubishi FR-E700 Manual PDF Download
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If in the process of using Siemens S7-200 PLC to control Mitsubishi FR-E700 inverters with Modbus-RTU protocol, you need any support, please comment below the article, I will reply to you as soon as possible.
Best Regards!
