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ASCII

FunctionA 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. - Get the ASCII code of a character within a string

Inputs

IN  : STRING Input string
POS : DINT   Position of the character within the string
             (The first valid position is 1)

Outputs

CODE : DINT    ASCII code of the selected character
               or 0 if position is invalid

Remarks

In FFLD language, the input rung (EN) enables the operation, and the output rung keeps the same value as the input rung. In IL"Instruction list" This is a low-level language and resembles assembly language, the first parameter (IN) must be loaded in the current result before calling the function. The other input is the operand of the function.

ST Language

CODE := ASCII (IN, POS);

FBD Language

FFLD Language

(* The function is executed only if EN is TRUE *)
(* ENO is equal to EN *)

IL Language:

Op1: LD"Ladder diagram" Ladder logic is a method of drawing electrical logic schematics. It is now a very popular graphical language for programming Programmable Logic Controllers (PLCs). It was originally invented to describe logic made from relays. The name is based on the observation that programs in this language resemble ladders, with two vertical "rails" and a series of horizontal "rungs" between them       IN
     AND_MASK MSK
     ST       CODE

See also

CHAR

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