Siemens Simatic SM331 Getting Started page 56

SE_3 := 0.000000e+000;
END_DATA_BLOCK
FUNCTION FC 1 : VOID
TITLE = Conversion of a channel's raw values
VERSION : 1.0
VAR_INPUT
Raw : WORD ; // Analog value display
END_VAR
VAR_OUTPUT
Current : REAL ;
END_VAR
VAR_TEMP
TDoubleInt : DINT ;
TInt : INT ;
END_VAR
BEGIN
NETWORK
TITLE = Conversion of raw values in mA
L #Raw;
T #TInt;
// Only long integers can be converted into REAL format
L #TInt;
ITD ;
T #TDoubleInt;
L #TDoubleInt; //
DTR ;
T #Current;
L 1.728000e+003; //
/R ;
T #Current;
L 4.000000e+000;
+R ;
T #Current;
END_FUNCTION
54
// Current in mA
HEX value
// Current = --------------------
//
!
// !
// ! /
// +-----/-----------+----
// 4
// Offset adjustment
Getting Started SM331 AI 8x12bit Part1: 4-20mA
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