Semantic Error (SEM1126): The data types of the external variable '... : ...' and the related global variable '... : ...' are not equal.
In a local 'Variables' table of the POU mentioned in the error message, an external variable is declared ('Usage = External') with a different data type as the related global declaration in the mentioned Data List of the 'IEC 61131-3' PLANT node.
Each global variable has to be declared with the keyword Global in the resource-global Data List and with 'Usage = External' in each POU where it is used.
The relating global and external variable must have the same data type.
| Further Info
For information on variables and how to declare them refer to the topic "Declare Variables/FB Instances" |