RIGHTPLCopen motion icon

FunctionClosed 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. - Extract characters of a string on the right.

Inputs

IN : STRING Character string.

NBC : DINT Number of characters to extract .

Outputs

Q : STRING String containing the last NBC characters of IN.

Remarks

  • 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 the ILClosed "Instruction list" This is a low-level language and resembles assembly language, the first input (the string) must be loaded in the current result before calling the function.
    • The second input is the operand of the function.

ST Language

Q := RIGHT (IN, NBC);

FBD Language

RightFbd.gif (1281 octets)

FFLD Language

(* The function is executed only if EN is TRUE *)
(* ENO keeps the same value as EN *)
RightLd.gif (1531 octets)

IL Language

Op1: LDClosed "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
     RIGHT  NBC
     ST     Q

See Also