BONFIGLIOLI Active Cube - Function Code 16, Write 32-Bit Parameter

Exception condition code
The following exception condition codes are possible:
2 INVALID DATA ADDRESS
• Parameter unknown
3 INVALID DATA VALUE
• Number of bytes in data field too small or too high
4 SLAVE DEVICE ERROR
• Error when writing parameters
For a description of the exception condition codes, refer to Chapter 7.2.9 “Exception condition codes”.
For an example of a Modbus RTU telegram, refer to Chapter 9.1.3.
7.2.4 Function code 16, write 32-bit parameter
Function code 16 can be used for writing 32-bit values into the frequency inverter.
Request Write 32-bit parameter:
MBAP header
Address
1 byte
1 – 0xF7 (=247)
Function code
1 byte
0x10
Start address (dataset / para. no.)
2 bytes
0x0000 – 0x963F
Number of registers
2 bytes
0x0002
Number of bytes
1 byte
0x04
Register value (parameter value)
2 bytes
0 – 0xFFFF FFFF
Response:
MBAP header
Address
1 byte
1 – 0xF7 (=247)
Function code
1 byte
0x10
Start address (dataset / para. no.)
2 bytes
0x0000 – 0x963F
Number of registers
2 bytes
0x0002
Exception condition response:
MBAP header
Address
1 byte
1 – 0xF7 (=247)
Error code
1 byte
0x90
Exception condition code
1 byte
2, 3 or 4
Start address
This field is used for saving the parameter number and dataset number. The parameter number is in
the range between 0 and 1599 and is saved in the 12 least significant bits. The dataset number is in
the range between 0 and 9 and is saved in the 4 most significant bits.
Example:
Parameter 372 (hex. 0x174), dataset 2 (hex. 0x2) is saved as hex. 0x2174.
Start address
Data set
Parameter number
Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
For the above example:
Hex.
0
0
1
0
0
0
0
1
0
1
1
1
0
1
0
0
Bin.
2
1
7
4
32
ACU Modbus/TCP 10/13