Siemens SITRANS P - Page 156

Result
Process value alarms and warnings are acknowledged and deleted.
The event counter is reset.
Hysteresis
The hysteresis works as follows:
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Limits with hysteresis
If you enter a non-zero value in the "Hysteresis" text box, the hysteresis is disabled.
Upper limit with hysteresis (A)
An overrun event is counted when the process value rises above the upper limit ①.
The next
overrun event is counted when the process value falls below the lower limit minus the
entered hysteresis② and then rises above the upper limit③.
Two events are counted in the displayed time period within 'A'.
Parameter assignment
9.3 Parameter assignment over remote operation
SITRANS P320/P420 with 4 to 20 mA/HART
156 Operating Instructions, 11/2019, A5E44852162-AC