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4Ć53FST Configuration
Original Ć June 1990 CE4.2:CL6211
CNTRL CNTRL
16
INSTRUCTION NAME: CNTRL (control)
DESCRIPTION: This instruction initiates the primary control algorithm (PCA) within a control
loop. When this function is performed, the information defined during the PCA definition phase of
configuration is used in the control strategy. The SVA input is always the process variable value in
engineering units. The SVD input remains unchanged. Each loop can have either one CNTRL (or
%CNTRL) function or none at all.
GRAPHIC REPRESENTATION: SYMBOLIC REPRESENTATION:
NO GRAPHIC REPRESENTATION
PROCESS
VARIABLE
PCA
CONTROL
FUNCTION
SET
POINT
EU %!
CONFIGURATION FORMAT: CNTRL (
Comment >>
OPERAND DESCRIPTIONS:
Comment - A comment up to 255 characters long.
FUNCTION EQUATIONS:
PV = SVA(in) (in engineering units)
SVA(out) = f(CNTRL)
SVD(out) = SVD(in)
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