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
