A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. - Find position of characters in a string.
Inputs
| IN | STRING | Character string. |
| STR | STRING | Specific characters to search for within the STRING. |
Outputs
| POS | DINT | Position of the first character of STR in IN, or 0 if not found. |
Remarks
The first valid character position is 1. A return value of 0 means that the STR substring has not been found. The return value can be used with other string functions such as MID and RIGHT. The search is case sensitive.
In 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.
In IL "Instruction list"
This is a low-level language and resembles assembly, 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.
ST Language
POS := FIND (IN, STR);
FBD Language
FFLD Language
(* The function is executed only if EN is TRUE. *)
(* ENO keeps the same value as EN. *)
IL Language
See Also
