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 Function - Extract characters of a string on the left.

Inputs

Input

Data Type

Range

Unit

Default

Description

IN

STRING

 

 

 

Character string.

NBC

DINT

 

 

 

Number of characters to extract.

Outputs

Output

Data Type

Range

Unit

Description

Q

STRING

 

 

String containing the first NBC characters of IN.

Remarks

None

FBD Language Example

FFLD Language Example

  • In the FFLD Language, the operation is executed only if the input rung (EN) is TRUE.
    • The output rung (ENO) keeps the same value as the input rung.
    • The function is executed only if EN is TRUE.
    • ENO keeps the same value as EN.

IL Language Example

  • In the IL Language, the first input (the string) must be loaded in the current result before calling the function.
    • The second argument is the operand of the function.
Op1: LD     IN
     LEFT   NBC
     ST     Q

ST Language Example

Q := LEFT (IN, NBC);

See Also