SigID

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 identifier of a "Signal" resource

Inputs

SIGNAL : STRING  Name of the signal resource - must be a constant value!
COL : STRING     Name of the column within the signal resource - must be a constant value!

Outputs

ID : DINT        ID of the signal - to be passed to other blocks

Remarks

Some blocks have arguments that refer to a "signal" resource. For all these blocks, the signal argument is materialized by a numerical identifier. This function enables you to get the identifier of a signal defined as a resource.

ST Language

ID := SigID ('MySignal', 'FirstColumn');

FBD Language

FFLD Language

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    'MySignal'
     SigID 'FirstColumn'
     ST    ID

See also

SigPlay   SigScale   Signal resources