Siemens SINUMERIK 828D

H2: Auxiliary function outputs to PLC
8.2 Predefined auxiliary functions
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
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8.2.3 Parameter assignment
8.2.3.1 Group assignment
The handling of the auxiliary functions for a block search is defined using the group assignment of an auxiliary
function. The 168 auxiliary function groups available are subdivided into predefined and user-definable groups:
Each predefined auxiliary function is assigned, as standard, to an auxiliary function group. For most pre-defined
auxiliary functions, this assignment can be changed using the following machine data:
MD22040 $MC_AUXFU_PREDEF_GROUP[<n>] (group assignment of predefined auxiliary functions)
If an auxiliary function is not assigned to any group, then a value of "0" should be entered into the machine data.
For the pre-defined auxiliary functions with the following indices <n>, the group assignment cannot be changed:
0, 1, 2, 3, 4, 22, 23, 24
17 Nibbling on
18 Nibbling
Note
In the case of auxiliary functions for which no output behavior has been defined, the following
default output behavior is active:
• Bit 0 = 1: Output duration one OB1 cycle
• Bit 7 = 1: Output at block end
Predefined groups: 1 ... 4 10 ... 12 72 ... 168
User-defined groups: 5 ... 9 13 ... 71
Note
1. Auxiliary function group and block search
Auxiliary functions of the 1st auxiliary function group are, for a block search, only collected,
but not output.
Bit Meaning