Auxiliary Function Outputs - Siemens SINUMERIK 828D Programming Manual

Auxiliary function outputs

Function
The auxiliary function output sends information to the PLC indicating when the NC program
needs the PLC to perform specific switching operations on the machine tool. The auxiliary
functions are output, together with their parameters, to the PLC interface. The values and
signals must be processed by the PLC user program.
Auxiliary functions
The following auxiliary functions can be transferred to the PLC:
Auxiliary Function
Tool selection
Tool offset
Feedrate
Spindle speed
M functions
H functions
For each function group or single function, machine data is used to define whether the output
is triggered before, with or after the traversing motion.
The PLC can be programmed to acknowledge auxiliary function outputs in various ways.
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
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