n
Output set at comparison value (pulse at comparison value)
–
When the counter reaches the
comparison value
the output is set for the parame-
trized
pulse duration
.
–
If the
pulse duration
= 0, the output is set until the comparison condition is not
longer fulfilled. When you've set a main counting direction the output is only set at
reaching the comparison value from the main counting direction.
n
Pulse duration
–
The pulse duration defines how long the output is to be set. It can be pre-set in
steps of 2.048ms between 0 and 522.24ms.
–
The
pulse duration
starts with the setting of the according digital output.
–
The inaccuracy of the
pulse duration
is less than 2.048ms.
–
There is no past triggering of the
pulse duration
when the comparison value has
been left and reached again during pulse output.
n
The
hysteresis
serves the avoidance of many toggle processes of the output and the
interrupt, if the
counter value
is in the range of the
comparison value
.
n
For the
hysteresis
you may set a range of 0 to 255.
n
The settings 0 and 1 deactivate the
hysteresis
.
n
The
hysteresis
influences zero run, comparison, over- and underflow.
n
An activated
hysteresis
remains active after a change. The new
hysteresis
range is
activated with the next
hysteresis
event.
The following pictures illustrate the output behavior for
hysteresis
0 and
hysteresis
3 for
the according conditions:
1
Counter value
³
comparison value
®
output is set and
hysteresis
activated
2
Leave
hysteresis
range
®
output is reset
3
Counter value
³
comparison value
®
output is set and
hysteresis
activated
4
Leave
hysteresis
range, output remains set for
counter value
³
comparison value
5
counter value
<
comparison value
and
hysteresis
active
®
output is reset
6
counter value
³
comparison value
®
output is not set for
hysteresis
active
7
Leave
hysteresis
range, output remains set for
counter value
³
comparison value
Hysteresis
Effect at counter value
³
comparison value
VIPA System 300S
+
Deployment I/O periphery
Counter - Additional functions
HB140 | CPU | 314-6CF23 | en | 19-01
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