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4.4 Consumed quantity monitoring [ImP]
The unit has an internal quantity meter (totaliser)� It continuously sums up the
consumed quantity and provides this process value both on the display and via
the IO-Link interface�
Pulse signals or a switching signal (preset counter) can be used to monitor the
consumed quantity�
→ 4.4.3 Consumed quantity monitoring via pulse signals
→ 4.4.4 Consumed quantity monitoring via preset counter
4.4.1 Meter reading
The current quantity meter count can be indicated
(→ 8.1)
�
In addition, the value before the last reset is saved� This value and the time since
the last reset can also be displayed
(→ 8.1)
�
The meter saves the totalled volumetric flow quantity every 10 minutes�
After a power failure this value is available as the current meter reading� If a
time-controlled reset is set, the elapsed time of the set reset interval is also
saved� So the possible data loss can be at most 10 minutes�
4.4.2 Counter reset
There are different ways to reset the quantity meter�
→ 10.3.3 Manual counter reset
→ 10.3.4 Time-controlled counter reset
→ 10.3.6 Counter reset using an external signal
→ Counter reset via the IO-Link interface
If the quantity meter is not reset by applying one of the above-mentioned methods,
an automatic reset takes place when the maximum volumetric flow quantity that
can be displayed is exceeded (overflow)�
OUT1 and OUT2 cannot be used simultaneously for the consumed quantity
monitoring�
The accuracy of the consumed quantity measurement depends on the
accuracy of the flow measurement�
