VEGA VEGAPULS SR 68 Foundation Fieldbus - Handbuch (Seite 78)

78
11 Anhang
VEGAPULS SR 68 • Foundation Fieldbus
38297-DE-130516
Berechnungsfunktionen. Der Anwender kann ohne Kenntnis des Formelzusammenhangs den
gewünschten Algorithmus nach Namen auswählen.
Folgende Algorithmen stehen zur Verfügung:
•
Flow compensation, linear
•
Flow compensation, square root
•
Flow compensation, approximate
•
BTU flow
•
Traditional Multiply Divide
•
Average
•
Traditional Summer
•
Fourth order polynomial
•
Simple HTG compensated level
•
Fourth order Polynomial Based on PV
Abb. 64: Schematische Darstellung Funktionsblock Arithmetic
Parameterliste
Die folgende Tabelle liefert eine Übersicht über die verwendeten Parameter.
FF desciptor Description Unit
PRIMARY_VALUE PRIMARY_VALUE (Linearized value). This is the process va-
lue after min/max adjustment and Linearization with the status
of the transducer block. The unit is defined in "PRIMARY_VA-
LUE_UNIT"
PRIMARY_VALUE_UNIT Selected unit code for "PRIMARY_VALUE"
SECONDARY_VALUE_1 This is the measured value after min/max adjustment with the
status of the transducer block. The unit is defined in "SECON-
DARY_VALUE_1_UNIT"
SECONDARY_VALUE_1_
UNIT
Selected unit code for "SECONDARY_VALUE_1"
SECONDARY_VALUE_2 This is the distance value ("sensor_value") with the status of
the transducer block. The unit is defined in "SECONDARY_VA-
LUE_2_UNIT"
FILL_HEIGHT_VALUE Filling height. The unit is defined in "FILL_HEIGHT_VALUE_
UNIT"
FILL_HEIGHT_VALUE_UNIT Filling height unit