CNC 8060
CNC 8065
(REF: 1402)
3
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INTRODUCTION TO THE PLC.
The PLC program may be either edited at the front panel or copied from a peripheral or PC.
The PLC program has a modular structure and may combine files in "C" language, contact
(ladder) language or mnemonic language.
For the program to be executed, its object file (executable) must be generated. On power-
up, the CNC executes the executable PLC program stored in memory; if there isn't one, the
CNC will show the relevant error code.
Data exchange takes place in automatic mode between the CNC and the PLC. The following
is possible from the PLC:
• Control physical inputs and outputs (remote modules).
• Consult and/or modify CNC-PLC exchange variables.
• Consult and/or modify the internal CNC variables.
• Display messages or errors at the CNC.
The following is possible from the CNC:
• Transfer auxiliary functions M, H and S.
• Access PLC resources from any part-program.
Abbreviations used in this chapter.
(=0) Low logic level.
(=1) High logic level.
(g.m.p.) General machine parameter.
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