Cleveland Range inverter Operating, Communication Protocol Modbus-RTU, MODBUS-RTUCommunication

Chapter 5 - MODBUS-RTU Communication

5.4 Operating

5.4.1Operating Steps

-Check whether the computer and the inverter are connected correctly.

-Turn ON the inverter. But, do not connect the load until stable communication between the computer and the inverter is verified.

-Start the operating program for the inverter from the computer.

-Operate the inverter using the operating program for the inverter.

-Refer to “6. Troubleshooting” if the communication is not operating normally.

User program or the “DriveView” program supplied from CMC Industrial Systems can be used as the operating program for the inverter if I/O-50 [Communication Protocol Selection] was set to default value 0.

5.5 Communication Protocol (Modbus-RTU)

The communication structure is that the ACtionMaster drives are slaves and a computer/host is the master.

5.5.1Supported Function Code

	Function Code	Name
	0x03	Read Hold Register
	0x04	Read Input Register
	0x06	Preset Single Register
	0x10	Preset Multiple Register
5.5.2 Exception Code

Exception Code	Name
0x01	ILLEGAL FUNCTION
0x02	ILLEGAL DATA ADDRESS
0x03	ILLEGAL DATA VALUE
0x06	SLAVE DEVICE BUSY

5.5.3Baud Rate

1200, 2400, 4800, 9600, 19200bps (default value of 9600bps)

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