For example, this function allows a "missing " pulse to be detected in a standard
pulse train.
Interval timer
-
Between
For the Between mode, basically two timers are used: one to set the start of a
time window and a second one to set the width of the time window. The second
trigger event must be within this time window.
A
P
1 2 3
8
11
9
10
4 5
7
6
Figure 10.15:
Interval timer
-
Between
The following sequence explains what happens:
1
The first trigger event starts Interval Timer 1.
2
A second trigger event occurs before Interval Timer 1 has expired and the
timer is reset.
3
A third trigger event occurs before Interval Timer 1 has expired and the
timer is reset.
4
Interval 1
5
Interval Timer 1 expires and Interval Timer 2 is started.
6
Interval 2
7
Interval Timer 2 expires while no trigger event occurred within the set
period. The complete trigger logic is reset.
8
The first new trigger event starts Interval Timer 1.
9
A second trigger event occurs before Interval Timer 1 has expired and the
timer is reset.
10
Interval Timer 1 expires and Interval Timer 2 is started.
11
A trigger event occurs before Interval Timer 2 expires and a trigger is
generated.
A
Trigger
GEN3i
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