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Installation manual
CNC 8060
CNC 8065
3.
INTRODUCTION TO THE PLC.
(REF: 1402)
Operation of a timer.
3.5.4 Signal limiting mode. TG4 Input.
In this operating mode, the timer status is kept high (T=1) from the moment the TG4 input
is activated until the time indicated by the time constant has elapsed or a down-flank occurs
at input TG4.
With TEN=1 and TRS=0, the timer is activated with an up-flank at input TG4. At that moment,
the timer status output (T) changes states (T=1) and the timing starts from "0".
Once the time indicated by the time constant has elapsed, the timing stops and the status
output of the timer goes low (T=0).
The elapsed time (t) is maintained until a new up-flank takes place at input TG4.
If a down-flank occurs at trigger input TG4 before the time indicated by the time constant
has elapsed, the PLC stops the timing, brings the status output low (T=0) and it keeps the
current timing value (t).
To trigger the timer again, a new up-flank is required at input TG4.
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