20 Advanced functions
20.6 Event triggers
PIOX S72*
2022-05-15, UMPIOX_S72xV1-9EN
186
Definition of the switching delay
• Enter a time interval after which the event trigger has to switch in case the event occurred.
• Press ENTER.
• Enter a time interval after which the event trigger has to be deactivated in case of a measurement failure.
• Press ENTER.
20.6.1
Apparent switching delay
The measured values and totalizer values will be displayed rounded according to the set number of decimal places. The
limits, however, will be compared to the non-rounded measured values. This might cause an apparent switching delay
when the measured value changes marginally (less than the visualized decimal places). In this case, the switching
accuracy of the event trigger is higher than the accuracy of the display.
20.6.2
Reset and initialization of the event triggers
After an initialization of the transmitter all event triggers are deactivated.
• Press 3 times C during measurement to set all event triggers to the idle state.
Event triggers whose switching condition is still met will be activated again after 1 s. This function is used to reset event
triggers of the type
HOLD
if the switching condition is no longer met.
If a measurement is stopped, all event triggers will be deactivated and the corresponding process outputs will be de-
energized, independently of the programmed idle state.
20.6.3
Event trigger during the measurement
An event trigger with the switching condition
MAX (x>limit)
,
MIN (x<limit)
,
Within range
or
Out of range
is
updated max. once per second to avoid a constant switching of the event trigger (in case the measured values fluctuate
around the value of the switching condition).
An event trigger with switching condition
ERR (x=fail)
is activated during a measurement failure.
An event trigger of the type
Non-hold
is activated when the switching condition is met. It is deactivated when the
switching condition is no longer met. But it remains activated for at least 1 s even when the switching condition is met for a
shorter period of time.
An event trigger of the type
Hold
is activated when the switching condition is met. It remains activated even when the
switching condition is no longer met.
An event trigger of the type
Hold for a while
is activated when the switching condition is met. The time after which
the deactivation takes place is defined in the menu item
Hold interval
.
20.6.4
Status display of the event triggers
The state of the event triggers is displayed during the measurement.
• Press
to scroll through the second line from below until the event trigger status is displayed.
The status display of the event triggers is structured as follows.
Rx =
with
X
being the number of the event trigger and
a pictogram according to Tab. 20.6.
Options\Event trigger\Rx Enable\Source item\...\Glitch interval
Options\Event trigger\Rx Enable\Source item\...\Failure delay
Notice!
There is no visual or acoustic indication of event trigger switching.
