Safety Semantic Error: The variable usages 'Program', 'IN Port' and 'OUT Port' are not supported in safety POUs.
In safety-related POUs, no program-global variables are supported and no ports can be created.
The following keywords can be used in safety-related POUs:
 | local variable |
 | input variable in an FB POU |
 | output variable in an FB POU |
 | external variable |
See also topic "Variable Declaration Keywords" for details.