BONFIGLIOLI Active Cube - Page 37

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
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: Frequency value
A frequency value of 100.25 Hz is to be transferred. The actually transferred numerical value is 10025,
i.e. 0x2729in the hexadecimal system.
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 reading 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 9.2.4.
10/13
ACU Modbus/TCP 35