Predefined Auxiliary Functions; Overview: Predefined Auxiliary Functions - Siemens SINUMERIK 828D Function Manual

H2: Auxiliary function outputs to PLC

8.2 Predefined auxiliary functions

8.2 Predefined auxiliary functions
Function
Every pre-defined auxiliary function is assigned to a system function and cannot be changed. If a pre-defined
auxiliary function is programmed in a part program/cycle, then this is output to the PLC via the NC/PLC interface
and the corresponding system function is executed in the NCK.
Definition of a predefined auxiliary function
The parameters of the predefined auxiliary function are stored in machine data and can be changed in some
cases. All machine data, which are assigned to an auxiliary function, have the same index <n>.
• MD22040 $MC_AUXFU_PREDEF_GROUP[<n>] (group assignment of predefined auxiliary functions)
• MD22050 $MC_AUXFU_PREDEF_TYPE[<n>] (type of predefined auxiliary functions)
• MD22060 $MC_AUXFU_PREDEF_EXTENSION[<n>] (address extension for predefined auxiliary functions)
• MD22070 $MC_AUXFU_PREDEF_VALUE[<n>] (value of predefined auxiliary functions)
• MD22080 $MC_AUXFU_PREDEF_SPEC[<n>] (output behavior of predefined auxiliary functions)
8.2.1

Overview: Predefined auxiliary functions

Significance of the parameters listed in the following tables:
Parameter
Index <n>
Type
Address extension
Value
Group
Predefined auxiliary functions
General auxiliary functions, Part 1
System function
Stop
Conditional stop
End of subroutine
Tool change
400
Meaning
Machine data index of the parameters of an auxiliary function
MD22050 $MC_AUXFU_PREDEF_TYPE[<n>]
MD22060 $MC_AUXFU_PREDEF_EXTENSION[<n>]
MD22070 $MC_AUXFU_PREDEF_VALUE[<n>]
MD22040 $MC_AUXFU_PREDEF_GROUP[<n>]
Index <n> Type
0
1
2
3
4
5
Address
extension
M 0
M 0
M 0
M 0
M 0
M (0)
Value Group
0 1
1 1
2 1
17 1
30 1
(1)
1)
6
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions