Siemens SINUMERIK 840Di - 2 Detailed Description; 2.1 Predefined auxiliary functions; 2.1.1 Predefined auxiliary functions

Auxiliary Function Output to PLC (H2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-1
Detailed Description
2
2.1 2.1 Predefined auxiliary functions
2.1.1 Predefined auxiliary functions
Function
Predefined auxiliary functions are auxiliary functions for activating system functions. The
assignment of a predefined auxiliary function to system function cannot be changed.
During execution of a predefined auxiliary function, the corresponding system function is
activated and the auxiliary functions are output to the NC/PLC interface.
Definition of a predefined auxiliary function
The parameters of a predefined auxiliary function are stored in machine data and can be
changed in some cases. All parameters of an auxiliary function have the same index.
• MD22040 $MC_AUXFU_PREDEF_GROUP[ index ] (group assignment)
• MD22050 $MC_AUXFU_PREDEF_TYPE[ index ] (type)
• MD22060 $MC_AUXFU_PREDEF_EXTENSION[ index ] (address extension)
• MD22070 $MC_AUXFU_PREDEF_VALUE[ index ] (value)
• MD22080 $MC_AUXFU_PREDEF_SPEC[ index ] (specification of output behavior)