Lenze PLC Designer PLC Designer (R2-x) Manuel d'utilisateur télécharger pdf (Page 480)

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IEC Operators and additional norm extending functions

478 DMS 3.2 EN 02/2011 TD29 

Example in ST:

Var1:=MUX(0,30,40,50,60,70,80); (* Result is 30 *);

Note that an expression occurring ahead of an input other than INK will not be

processed to save run time ! Only in simulation mode all expressions will be

9.6 Comparison Operators...

PLC Designer IEC operator: Greater than

A Boolean operator which returns the value TRUE when the value of the first operand

is greater than that of the second. The operands can be BOOL, BYTE, WORD, DWORD,

SINT, USINT, INT, UINT, DINT, UDINT, REAL, LREAL, TIME, DATE, TIME_OF_DAY,

DATE_AND_TIME and STRING.

Example in IL:

ST Var1 (* Result is FALSE *)

Example in ST:

VAR1 := 20 > 30 > 40 > 50 > 60 > 70;

Example in FBD:

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Lenze PLC Designer PLC Designer (R2-x) Manuel d'utilisateur Page 480