Function Code 100 (=0X64), Read 32-Bit Parameter - BONFIGLIOLI Active cube Operation Manual

Register value
This field is used for saving the 32-bit parameter value.
Parameter values with decimal places are transferred without decimal point. Depending
on the number of decimal places, the values are multiplied by 10, 100 or 1000.
Example:
A frequency value of 123.45 Hz is to be transferred. The actually transferred numerical value is 12345,
i.e. 0x3039 in the hexadecimal system.
Exception condition code
The following exception condition codes are possible:
2 INVALID DATA ADDRESS
3 INVALID DATA VALUE
4 SLAVE DEVICE ERROR
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 9.2.2.
7.2.5

Function code 100 (=0x64), read 32-bit parameter

Request:
MBAP header
Address
Function code
Start address (dataset / para. no.)
Response:
MBAP header
Address
Function code
Register value (parameter value)
Exception condition response:
MBAP header
Address
Error code
Exception condition code
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.
Data set
Bits 15 14 13 12
For the above example:
Hex. 0 0 1 0
Bin. 2
10/13
• Parameter unknown
• Number of bytes in data field too small or too high
• Error when writing parameters
1 byte
1 byte
2 bytes
1 byte
1 byte
4 bytes
1 byte
1 byte
1 byte
Start address
Parameter number
11 10 9 8 7
0 0 0 1 0
1
ACU
Modbus/TCP
1 – 0xF7 (=247)
0x64
0x0000 – 0x963F
1 – 0xF7 (=247)
0x64
0 – 0x FFFF FFFF
1 – 0xF7 (=247)
0xE4
2, 3 or 4
6 5 4 3 2
1 1 1 0 1
7 4
1 0
0 0
33