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PACK8

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. - Builds a byte with bits

Inputs

IN0 : BOOL  Less significant bit
...
IN7 : BOOL  Most significant bit

Outputs

Q : USINT   Byte built with input bits

Remarks

• In FFLD language, the input rung is the IN0 input. 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 input must be loaded in the current result before calling the function.

ST Language

Q := PACK8 (IN0, IN1, IN2, IN3, IN4, IN5, IN6, IN7);

FBD Language

FFLD Language

(* ENO keeps the same value as 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    IN0
     PACK8 IN1, IN2, IN3, IN4, IN5, IN6, IN7
     ST    Q

See also

UNPACK8

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