Vega VEGAPULS 61 Operating Instructions Manual page 80

11 Supplement
an output signal according to the selection criteria. Typical input signals are AI blocks. Selection
possibilities are maximum, minimum, mean value, average value and first useful signal. Through
parameter combination, the block can be used as rotary switch or as preselection switch for the
first useful value. Switch information can be received by other input blocks or the user. Mean value
selection is also supported.
Fig. 64: Schematic presentation function block Input Selector
Function block Arithmetic
The function block "Arithmetic" allows the simple integration of usual metrological calculation func-
tions. The user can select the requested measurement algortihm according to the name without
known the formula.
The following algorithms are available:
•
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
Fig. 65: Schematic presentation function block Arithmetic
80 VEGAPULS 61 • Foundation Fieldbus