Hello everyone. I am a beginner in SCL programming. I want to create a function in SCL language. This function must take the information written in a DB. I wish I could write in 2 array of real. The values ​​read. DB information is points (x; y). This block could read several different DBs. And so my problems are these. 1) The index between 2 DBs could be different. I would certainly put in the first place in the DB the number of points. (That way we change only in the db and the block will be more generic). How to indicate in SCL to check the type of index data in INT and x, y REAL. Or I had thought of putting the value of the index in the first line. 2) How to go through the DB until the end. (I wish I could compare the values ​​of the DB to another value INPUT). I inquire on the net and I find a system with a pointer on structure. But I do not understand one or parameter of the structure that is LENGHT. Is the size of the DB or the type of data. Here is my code that is not too far but hey I hope you could help me. 

Rather than using a pointer to a structure would it be easier to give the block an input with the db in question. If so how to browse it?

Hi moi_meme,

do you use TIA or Step7 classic?

Closed cause question posted twice.

The second thread with the subject FB and DB is published within the conference STEP 7 Additional Software.

Best regards,