LEFT
Function - Extract characters of a string on the left.
Inputs
|
Input |
Data type |
Description |
|
IN |
STRING |
Character string. |
|
NBC |
DINT |
Number of characters to extract. |
Outputs
|
Output |
Data type |
Description |
|
Q |
STRING |
String containing the first NBC characters of IN. |
Remarks
In LD 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.
ST Language
Q := LEFT (IN, NBC);
FBD Language
LD Language
The function is executed only if EN is TRUE.
ENO keeps the same value as EN.
LEFT |
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IEC 61131-3 Automation platform > Programming - Reference guide > String operations > LEFT |
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