ABB FPBA-01 PROFIBUS DP - Example 2: Writing a Drive Parameter (or Data Set)

144 Communication protocol
Example 2: Writing a drive parameter (or data set)
To determine the parameter number and subindex for drive
parameter writing, convert the drive parameter group number and
the parameter index number to hexadecimal. The index number is
the Subindex (IND), and the group number is the Parameter
Number (PNU). For example, to write parameter 12.02 to the drive:
12.02 = 0Ch.02h => Parameter number = 0Ch, Subindex = 02h.
The following is an example of writing a 16-bit parameter.
Req
DP header
7
0
0
C
0
2
0
0
0
0
0
0
0
0
6
4
0
4
7
F
3
4
1
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
DP trailer
Resp 4
0
0
C
0
2
0
0
0
0
0
0
0
0
6
4
0
3
3
7
3
4
1
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
CW
REF
PZD3 PZD4 PZD5 PZD6
Request (Change parameter value [array])
Parameter Number
Subindex
1)
Parameter Value (100 decimal)
SW ACT PZD3 PZD4 PZD5 PZD6
Parameter Value (100 decimal)
Subindex
1)
Parameter Number
Response (Transfer parameter value
[array])
1)
2nd byte reserved