ascii

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

Inputs

Input	Data Type	Range	Unit	Default	Description
IN	STRING				Input string.
POS	DINT				Position of the character within the string. The first valid character position is 1.

Outputs

Output	Data Type	Range	Unit	Description
CODE	DINT			Either: The ASCII code of the selected character. 0 (zero) if the position is invalid.

Remarks

None

FBD Language Example

FFLD Language Example

• In the FFLD "Free Form Ladder Diagram" Language, the input rung (EN) enables the operation.
  • The output rung (ENO) keeps the same value as the input rung.

IL Language Example

• In the 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.

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

ST Language Example

CODE := ASCII (IN, POS);

See Also

char