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Chapter 5 Counters
Figure 5-29 shows a generation of two pulses with a pulse delay of five and a pulse width of
three (using the rising edge of Source) with CO.EnableInitalDelayOnRetrigger set to the
default True.
Figure 5-29. Retriggerable Single Pulse Generation with Initial Delay on Retrigger
Figure 5-30 shows the same pulse train with CO.EnableInitalDelayOnRetrigger set to the
default False.
Figure 5-30. Retriggerable Single Pulse Generation False
Note The minimum time between the trigger and the first active edge is two ticks
of the source.
For information about connecting counter signals, refer to the Default Counter/Timer Routing
section.
Continuous Pulse Train Generation
This function generates a train of pulses with programmable frequency and duty cycle. The
pulses appear on the Counter n Internal Output signal of the counter.
You can specify a delay from when the counter is armed to the beginning of the pulse train. The
delay is measured in terms of a number of active edges of the Source input.
You specify the high and low pulse widths of the output signal. The pulse widths are also
measured in terms of a number of active edges of the Source input. You also can specify the
active edge of the Source input (rising or falling).
SOURCE
GATE
(Start Trigger)
OUT
5 3 5 3
Counter
Load Values
4 3 210210 43 210210
SOURCE
GATE
(Start Trigger)
OUT
5 3 2 3
Counter
Load Values
4 3 210210 43 210210
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