qualified_only

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jiataifeng
Posts: 169
Joined: 30 Apr 2009 06:31

qualified_only

Post by jiataifeng » 28 Mar 2019 23:57

Global variable list (GVL):

{attribute 'qualified_only'}
VAR_GLOBAL
nVar : INT;
END_VAR

Within a POU, for example MAIN, the global variable nVar can only be addressed using the prefix GVL:

GVL.nVar := 5;
The following incomplete call of the variables would generate an error:

nVar := 5;



remove the attribute if you just want to use nVar for the available.

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