Lenze PLC Designer PLC Designer (R2-x) Uživatelský manuál stáhnout pdf (Strana 641)

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L-force | PLC Designer

PLC Designer Libraries

 DMS 3.2 EN 02/2011 TD29 639

LEFT

Provided by standard.lib.

Left returns the left, initial string for a given string. Input STR is type STRING, SIZE is of

type INT, the return value of the function is type STRING.

LEFT (STR, SIZE) means: Take the first SIZE character from the right in the string STR.

Example in IL:

LD 'SUSI'

LEFT 3

ST VarSTRING1 (* Result is 'SUS' *)

Example in FBD:

Example in ST:

VarSTRING1 := LEFT ('SUSI',3);

 Note!

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.

RIGHT

Provided by standard.lib.

Right returns the right, initial string for a given string.

RIGHT (STR, SIZE) means: Take the first SIZE character from the right in the string STR.

Input STR is of type STRING, SIZE is of type INT, the return value of the function is of

type STRING.

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