Plc Diagnosis; General - HEIDENHAIN iTNC 530 Service Manual

10 PLC Diagnosis

10.1 General

Definition of PLC PLC is a general term of the control technology and is the abbreviation for:
Programmable Logic Control.
The PLC is included in the HEIDENHAIN control units and is thus designated as Integral PLC:
Tasks of the PLC
PLC error See "Error Messages" on page 4 – 17
messages
PLC error messages (text, reaction of the control, etc.) are defined by the machine manufacturer.
May 2006
Adaptation of different machine types to HEIDENHAIN controls
Control tasks
Note
The machine manufacturer creates the PLC program for the machine or adapts an existing
PLC project to a machine.
DANGER
Changes in the PLC program or the PLC wiring may influence not only the function but also
the safety of the machine! This could lead to damage to property or persons!
Changes in the PLC may only be performed by the machine manufacturer!
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