9.2.2 Function code 16, write 32-bit parameter
Example 1:
Writing of parameter
Fixed Frequency 3 482 (0x01E2) in dataset 9 (= RAM for dataset 4) of frequen-
cy inverter with address 1.
The fixed frequency is to be set to 44.50 Hz. Parameter
Fixed Frequency 3 482 has two decimal
places. Thus the value to be sent is 4450 = 0x00001162.
Request: Master frequency inverter
Field:
ID
Par.No.
regis-
Byte
Response: Frequency inverter Master
Field:
ID
Par.No.
regis-
The response contains the number of written registers
Example 2:
Writing of parameter
Fixed Frequency 3 482 (0x01E2) in dataset 9 (= RAM for dataset 4) of frequen-
cy inverter with address 1.
The frequency is to be set to 2000.00 Hz (non-permissible value). Parameter
Fixed Frequency 3 482
has two decimal places. Thus the value to be sent is 20000 = 0x00030D40.
Request: Master frequency inverter
Field:
ID
Par.No.
regis-
Byte
Error response: Frequency inverter Master
Field:
ID
cep.
The sent exception condition code is the hexadecimal value 0x04 = ERROR SLAVE DEVICE.
48
ACU
Modbus/TCP 10/13