Examples for Application Programs
324 SICAM RTUs, User Manual SICAM CMIC
DC8-001-2.09, Edition 08.2016
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 (*cycle time in ms*)
PLC_INIT:
LD 10
ST M_REAL_CONSTANTforK (*constant for k*)
LD -5
ST M_REAL_CONSTANTforD (*constant for d*)
PLC_START:
LD I_036_032_000_000.VALUE (*input 1*)
ST MAX.IN0
LD I_036_033_000_000.VALUE (*input 2*)
ST MAX.IN1
CAL MAX (*the greater value of both is used*)
ST M_REAL_MAXVALUE (*serves for reading which value will*)
ST MUL.IN0 (*be used*)
LD M_REAL_CONSTANTforK
ST MUL.IN1
CAL MUL (*the selected value is multiplicated*)
ST ADD.IN0 (*with the constant and results as "kx"*)
LD M_REAL_CONSTANTforD
ST ADD.IN1
CAL ADD (*after the multiplication add "d"*)
ST O_036_032_001_001.VALUE (*selected adapted value*)
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