MODBUS PLC Mitsubishi FX3U with SINEE A90 inverter
1. Overview of MODBUS PLC Mitsubishi FX3U
See more :
Macro Program in HMI
Siemens PLC interrupt programming
Programmable PLC Delta
MODBUS PLC Delta DVP – Sinee A90 Inverter
- Today, with the development of technology, the control cabinets use a lot of communication for the purpose of enhancing monitoring, reducing external intermediate devices. The Modbus standard is widely used and is available in all inverter models. The use of communication helps to reduce the input and output costs of the PLC, and the electrical cabinet is more compact thanks to less wiring and reducing intermediate devices. At the same time, it helps us to monitor all operating parameters of the inverter, status, error … easily.
2. Modbus RTU message structure
- Address byte: determines which device bear the address to receive data (for Slave) or data from which address(for Master). This address is specified from 0 – 254
- Function code byte: specified from the Master, identifying the data request from the Slave device. Code example 01: read bit stored data, 03: read byte instantaneous data, 06: write byte data to slave, 15: write multi-bit data to slave
- Data Bytes: Identifies the data exchanged between Master and Slave
- Bytes CRC: 2 bytes of transfer function error checking. how to calculate the value of Byte CRC 16 Bits
3. Mitsubishi FX3U and Sinee A90 PLC hardware connection
- Depending on the device, there are different communication pins, in this case Sinee A90 inverter is A+, A-
- In some devices it can be RS485+, RS485-, or D+, D-…
According to the diagram, we connect the A+ pin of the Delta PLC to the A+ of the inverter and correspond to the A- pin.
4. Set up the Sinee A90 inverter communication parameters
- Running command setting via Sinee A90 inverter communication
- Frequency source setting via communication
- Sinee A90 multi-inverter communication connection diagram
5. FX3U PLC communication parameters setting
- In this article we choose the setting parameters: 9600 – 8 – N – 1
- Set communication parameters in
- Command to write run command parameter in PLC Mitsubishi FX3U to write run command for Sinee A90 inverter
- H7000 : Address of Sinee A90 inverter running instruction register
- D110 : Memory cell to write the value
- H001 : Run forward
- H002 : Reverse running
- H005 : Stop deceleration
- Command to write frequency parameter in PLC Delta to write run command for Sinee A90 . inverter
- H7015 : Frequency register address of the inverter
- D120 : Frequency value register
- Above is the full content of the article: “MODBUS PLC Mitsubishi FX3U with Sinee A90 inverter“
- Link to reference program Mitsubishi FX3U PLC and Sinee A90 inverter:
https://drive.google.com/file/d/1aDpvMY-guYXa_CS7Amtr__Uyh63jUv3n/view?usp=sharing
6. Contact
MODBUS PLC Mitsubishi FX3U with SINEE A90 inverter
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