S7 DB search

[Moggie]

Is there a FC/FB that can help me with the following? I need to search a DB for data, when the first instance of that data is found I want to know what DBB that data is in? Thanks in advance.

[JesperMP]

With "DBB" you mean at which byte number the match is found ? It would be dead simple with SCL. It is still possible with STL, here is an attempt (not tested): OPN "Data_Ind" //Open data block L P#0.0 T "D_Pointer" //Pointer to the start of the data field L #Quantity_Data Next: T #LoopCounter L #ComparisonValue L DBB ["D_Pointer"] =I //Notice. There is no //instruction for comparing bytes, //so integer compare is used. = "Match_found" A "Match_found" JC _OUT //stop looping when a match is found. L "D_Pointer" + 8 //Increment data field pointer by 1 bytes T "D_Pointer" L #LoopCounter LOOP Next //Jump back to start of loop _OUT: NOP 0 When a match is found then subtract LoopCounter from Quantity_Data to obtain the byte number. Edited June 28, 2007 by JesperMP

[Groo]

There is a standard FB, I don't have S7 at the mo, so can't remember the name, I think it was something like FIND. I'll see if I can download the standard library manual.

[Groo]

FC86, I believe it can be found in the S5 to S7 conversion library. I have used it once before and wirked well.