05.91
1 General Overview
1.1 Control
1
General Overview
1.1
Control
The following Subsections are intended as an introduction to the SINUMERIK 880 control.
They describe
•
The breakdown of the SINUMERIK 880 into areas
•
The tasks of the individual areas and
•
The basic mechanical structure of the control.
1.1.1
Control structure
The SINUMERIK 880 comprises three areas:
Area
Task
COM area (communication)
Operation, communication, computer link,
management
NC area (numerical control)
Control of axes and spindles
PLC area (programmable logic control)
Adaptation to the machine
The three areas communicate by means of a link RAM. The NC, PLC and COM areas are
described below.
Schematic structure of the SINUMERIK 880
Drives, encoders
Machine signals
Machine
Operator elements
Computer link
COM area
Servo CPU
PLC
I/O interface
NC area
PLC area
COM
NC CPU
Link RAM
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SINUMERIK 880 (PJ)