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B. Parametrizing via field bus
B.2.2 Task identifiers, response identifiers and error numbers
Task identifiers:
ReqID
Description
Reply identifier
Positive
Negative
0
No job
0
1
Request parameter 1)
1, 2
7
2
Modify parameter value (word) 1)
1
7
3
Modify parameter value (double word) 1)
2
7
6
Request parameter (array)
4, 5
7
7
Modify parameter value (array, word)
4
7
8
Modify parameter value (array, double word)
5
7
11
Modify parameter value (byte) 1)
11
7
12
Modify parameter value (array, byte)
12
7
1)
When using task numbers for simple variables to access parameters implemented as an array, the
subindex is ignored or set to 0. This means that the first element of an array is always addressed.
2) Jobs with non−supported job numbers (ReqID) will be answered with Response identifier 7 and
error number 22.
Tab.B/5:
Task identifiers
Festo GDCP−SFC−LACI−DN−EN en 0812NH
B−17