BONFIGLIOLI Active Cube

9.2.3 Function code 100 (=0x64), read 32-bit parameter
Example 1:
Reading of parameter
Fixed Frequency 2 481 in dataset 0 of frequency inverter with address 1.
Request: Master  frequency inverter
Field
:
MBAP
Unit ID
Func.
DSet/
Par.No.
Transaction ID
Protocol ID
Length
Hex
nn
nn
nn
nn
00
04
01
64
01
E1
Response: Frequency inverter  Master
Field:
MBAP
Unit ID
Func.
Par. value
Transaction ID
Protocol ID
Length
Hex
nn
nn
nn
nn
00
06
01
64
00
00
03
E8
The sent hexadecimal value is 0x000003E8 = 1000. Parameter
Fixed Frequency 2 481 has two deci-
mal places. Thus, Fixed Frequency 2 = 10.00 Hz.
Example 2:
Reading of unknown parameter 1600 (0x0640) in dataset 2 of frequency inverter with address 1.
Request: Master  frequency inverter
Field:
MBAP
Unit ID
Func.
DSet/
Par.No.
Transaction ID
Protocol ID
Length
Hex
nn
nn
nn
nn
00
04
01
64
26
40
Error response: Frequency inverter  Master
Field:
MBAP
Unit ID
Func.
Excep.
Transaction ID
Protocol ID
Length
Hex
nn
nn
nn
nn
00
03
01
E4
04
The exception condition code is the hexadecimal value 0x04 = ERROR SLAVE DEVICE.
10/13
ACU Modbus/TCP 49