Semantic Error: Invalid parameter expression.
An ST code worksheet contains an invalid function block call which is underlined in the code worksheet: The parameter list contains an expression which is only allowed in function calls.
In function block calls, only assignments are allowed for the formal parameters:
| InParamName := literal/variable | input parameter assignment |
| OutParamName => variable | output parameter assignment |
Example: CTU function block, 3 input/2 output parameters.
