BigS has changed a lot but didn't use the "normal" standard.
It look's like there is someone at Siemens who has an idea and then this will be done.
Sometimes I wish that the customer would bring BigS to trail so that have to pay für there "Mist"
As it is now we as developer have pay for Problems we are not at fault.
The differences in SCL is in my opinion wanted or doesn't care anyoneone because most of the automobil manufacturer don't want to use ist.
Your right if you say TIA is not useable.
"Any fool can write code that a computer can understand.
Good programmers write code that humans can understand."