Function Manual
12 01/2017
Various interface signals (A2)
3.1
General
Brief description
This chapter describes the functionality of various interface signals which are of general relevance, but are not described in
the function-specific chapters.
The exchange of signals and data between the PLC user program and the NCK (numerical control kernel) or HMI (display
unit) is performed via various data areas. The PLC user program does not have to handle the exchange of data and signals.
From the user's point of view, this takes place automatically.
PLC/NCK interface:
The control and status signals of the PLC/NCK interface are updated cyclically.
The signals can be subdivided into the following groups (see previous figure):
● General signals
● Operating mode signals
● Channel signals
● Axis/spindle signals
Notes on the PLC interface signal address representation
Currently, PLC interface signal addresses are represented by the V structure on the HMI while the manual shows them by
the DB structure.
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