EcoStruxure Machine Expert provides a feature by which for some libraries it is mandatory to specify a namespace in front of each symbol used out of this library.
For details, refer to Namespace in the EcoStruxure Machine Expert Functions and Libraries User Guide.
Therefore, after updating a project from a SoMachine version earlier than V4.0, you might encounter undeclared symbol compiler error messages.
To solve this, write the corresponding namespace, followed by a dot, in front of the undeclared symbol.
Example:
GET_STATE --> CIA405.GET_STATE.
