1 General Overview
05.91
1.1.4 PLC area
1.1.4
PLC area
The PLC area accommodates the interface control. This is where the machine-specific signals
(machine I/Os) are evaluated and switched.
The interface control
•
Adapts the control to the machine
•
Implements functions supported by the machine but not by the NC area and
•
Coordinates the machine-specific functions with the tasks of the NC.
The interface control is implemented by the PLC user program. The PLC user program is
compiled by the machine manufacturer. If required, the tasks of the interface control can be
divided between two PLC CPUs.
Notes:
•
This publication describes the (maximum) signal complement that can be processed by the
PLC user program.
•
The tasks of the PLC user program are explained in greater detail in a later Section.
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SINUMERIK 880 (PJ)