What happens?
Structure elements of the PLC application cannot be accessed by an external visualisation.
When does this behaviour occur?
The PLC Designer calculates an incorrect byte offset when creating the symbol configuration file for structure elements of the data type 'BIT'. As a consequence, the structure elements cannot be externally accessed (e.g. via OPC UA).
Which products are affected?
PLC Designer V3.0 and higher
Short-term measures:
Instead of using the data type 'BIT', use the data type 'BOOL' in structures if you want to add variables of this structure data type to the symbol configuration.
Evaluation/recommendation:
Due to the above function restriction, the structure elements of a variable can, e.g. not be accessed by an external visualisation. An applicative solution is described under 'Short-term measures'.
