acos / acosL

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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. - Calculate an arc-cosine.

Inputs

Input	Data Type	Range	Unit	Default	Description
IN	REAL / LREAL				Real value.

Outputs

Output	Data Type	Range	Unit	Default	Description
Q	REAL / LREAL				Result: arc-cosine of IN.

Remarks

None

FBD Language

AcosFbd.gif (1164 octets)

FFLD Language

In the 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.

AcosLd.gif (1415 octets)

IL Language

In the IL "Instruction list" This is a low-level language and resembles assembly language, the input must be loaded in the current result before calling 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
     ACOS
     ST  Q    (* Q is: ACOS (IN) *)

ST Language

Q := ACOS (IN);