Installation manual
CNC 8060
CNC 8065
INTRODUCTION TO THE PLC.
3.
(REF: 1402)
·225·
PLC resources.
Timers (T1-T512).
They are elements capable of maintaining their output at the same logic level (state) for a
preset time period (time constant) after which their output changes states.
They are represented by the letter "T" followed by a time number between T1 and T512.
All timers are initialized (=0) when starting up the PLC.
See "3.5 Operation of a timer." on page 228.
Counters (C1-C256).
They are elements capable of counting up or down a preset amount of events.
They are represented by the letter "C" followed by a counter number between C1 and C256.
See "3.6 Operation of a counter." on page 238.
Registers and marks for CNC-PLC communication.
The PLC has access to a some internal CNC data.
The PLC can consult and/or modify certain CNC signals (marks and registers).
• Consultation signals: CNCREADY, START, FHOUT, ...
• Modifiable signals: _EMERGEN, _STOP, _FEEDHOL, ...
See chapter "6 Logic CNC inputs and outputs.".
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