8 Modbus RTU
8.3 Operating mode Modbus RTU
148 DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com
8.3.4.2 Function code 06
hex
: Writing a holding register
This function writes data to a holding register.
Example
Writing of the command (ID 1) of a DC1 variable frequency drive with the
slave address 1.
Master request: 01 06 0000 0001 480A
hex
Slave response: 01 06 0000 0001 480
hex
The slave response is a copy of the master request if it is a normal response.
Register [hex] Name
01 Slave address
06 Function code (writing a holding register)
0000 0: The ID of the register for the writing operation is 1, since the master controller has an
offset of +1.
0001
Content (2 byte) for register 0000 0000 0000 001
bin
￫ RUN
480A
CRC
Register [hex]
Name
01 Slave address
06 Function code (here. Writing of a holding register)
0000 1: The ID of the register for the writing operation is 1, since the master controller has an
offset of +1.
0001
Content (2 byte) for register 0000 0000 0000 001
bin
￫ RUN
B844
CRC
￫
Function code 06
hex
can be used for a broadcast.
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