Lenze PLC Designer PLC Designer (R2-x) Bedienungsanleitung PDF herunterladen (Seite 648)

L-force | PLC Designer

PLC Designer Libraries

646 DMS 3.2 EN 02/2011 TD29 

Example in ST:

arINT1 := FIND ('abcdef','de');

String functions are not "thread safe": When using tasks, string functions may only

be used in a single task. If the same function is used in different tasks, there is a

danger of overwriting.

19.1.2 Bistable Function Blocks...

Provided by standard.lib.

Making Bistable Function Blocks Dominant:

Q1 = SR (SET1, RESET) means:

Q1 = (NOT RESET AND Q1) OR SET1

The input variables SET1 and RESET as well as the output variable Q1 are type BOOL.

Declaration example:

SRInst : SR ;

Example in IL:

CAL SRInst(SET1 := VarBOOL1, RESET := VarBOOL2)

LD SRInst.Q1

Example in FBD:

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Lenze PLC Designer PLC Designer (R2-x) Bedienungsanleitung Seite 648