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Installation manual
CNC 8060
CNC 8065
3.
INTRODUCTION TO THE PLC.
(REF: 1402)
Operation of a counter.
3.6 Operation of a counter.
All the counters have a status output "C" and the inputs: CUP, CDW, CEN and CPR. Its
internal count can also be checked at any time.
The counter's count is stored in a 32-bit variable. Consequently, its value will be in the
±2147483647 range.
(CUP) Count-up input.
Every time an up-flank occurs at this input, the internal count of the counter increases one
unit.
It is referred to by the letters CUP followed by the counter number, for example: CUP 1, CUP
25, CUP 102, etc.
(CDW) Countdown input.
Every time an up-flank occurs at this input, the internal count of the counter decreases one
unit.
It is referred to by the letters CDW followed by the counter number, for example CDW 1, CDW
25, CDW 102, etc.
(CEN) Enable input.
It enables the internal count of the counter.
It is referred to by the letters CEN followed by the counter number, for example: CEN 1, CEN
25, CEN 102, etc.
To change the internal count (CUP and CDW), the CEN input must be high (=1). Setting CEN
= 0 stops the counter's count and ignores the CUP and CDW inputs.
I2 = CUP 10
Every time an up-flank occurs at I2, the count of the C10 counter increases one unit.
I3 = CDW 20
Every time an up-flank occurs at I3, the count of the C10 counter decreases one unit.
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