9.2.4 Function code 101 (=0x65), write 32-bit parameter
Example 1:
Writing of parameter
Rated Frequency 375 (0x0177) in dataset 2 of frequency inverter with address
1.
The Rated Frequency is to be set to 10.00 Hz. Parameter
Rated Frequency 375 has two decimal plac-
es. Thus the value to be sent is 1000 = 0x03E8.
Request: Master frequency inverter
Field:
ID
Par.No.
Transaction ID
Length
Response: Frequency inverter Master
Field:
ID
Par.No.
Transaction ID
Length
The response is the reflected signal of the request message.
Example 2:
Writing of non-permissible value 9.00 Hz in parameter
Rated Frequency 375 in dataset 2 of frequency
inverter with address 1.
Parameter
Rated Frequency 375 has 2 decimal places. Thus the value to be sent is 900 = 0x0384.
Request: Master frequency inverter
Field:
ID
Par.No.
Transaction ID
Length
Error response: Frequency inverter Master
Field:
The sent exception condition code is the hexadecimal value 0x04 = ERROR SLAVE DEVICE.
50
ACU
Modbus/TCP 10/13