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Examples for Application Programs
B.3
Linear Adaptation with Value Selection
Two analog values are compared and the higher one is selected (MAX). With this one an adap-
tation kx+d is performed. The processed value receives a new address
(O_036_032_001_001.VALUE). The constants for k (M_REAL_CONSTANTforK) and d
(M_REAL_CONSTANTforD) are defined with initial values in the programm sequence
PLC_INIT.
PLC_RESET:
LD
10
ST
PLC_CYCLETIME
PLC_INIT:
LD
10
ST
M_REAL_CONSTANTforK
LD
-5
ST
M_REAL_CONSTANTforD
PLC_START:
LD
I_036_032_000_000.VALUE
ST
MAX.IN0
LD
I_036_033_000_000.VALUE
ST
MAX.IN1
CAL
MAX
ST
M_REAL_MAXVALUE
ST
MUL.IN0
LD
M_REAL_CONSTANTforK
ST
MUL.IN1
CAL
MUL
ST
ADD.IN0
LD
M_REAL_CONSTANTforD
ST
ADD.IN1
CAL
ADD
ST
O_036_032_001_001.VALUE
324
(*cycle time in ms*)
(*constant for k*)
(*constant for d*)
(*input 1*)
(*input 2*)
(*the greater value of both is used*)
(*serves for reading which value will*)
(*be used*)
(*the selected value is multiplicated*)
(*with the constant and results as "kx"*)
(*after the multiplication add "d"*)
(*selected adapted value*)
SICAM RTUs, User Manual SICAM CMIC
DC8-001-2.09, Edition 08.2016
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