Bertrand Irakoze

Thanks for that Joe! you put it very well. It makes sense now. As long as my COM Rx blocks are live, every new data I get I can copy it to another string variable. Can I use the same buffer tags to write data to from the ports they are looking at. Since I reset them after each successful comparison. But let me be specific about my rules. First scan, In one port, I I look at the string for its last digit, if it is L (for Left), that's good. Same thing for the other port, on the first scan, I look for R( for Right) as the last digit of the string. Only when that's good, I take in another string on the subsequent scan. For these new strings, I do the same and look for the last characters ( L and R), but also compare the first part of the string that comprises of numbers. If they match then I'm good to go. I already got the code working for this second set of comparisons. I wanted to add another sequence for the new scan. Thanks, Bertrand Irakoze

I'm already using 2 scanners connected to 2 different Serial COM ports. but currently they only scan once with both scanners and then I compare the 2 barcodes. But I also want to scan 2 other parts with the same scanners and also compare them. So my question is, can I just copy and paste the rungs I'm already using to treat additional barcodes? Will it automatically prompt the cursor to take in other barcodes after each scan? What if I want to move to the next barcodes only when the ones just scanned are good? I'm attaching my code to show what I'm talking about. UniStream_070_Message_Composer_Two Barcode Readers.ulpr

I'm working on a scanning project that scans barcodes of 2 parts during assembly to compare them. I'm using 1 scanner connected to the serial port. I need the operator to scan the first barcode, then he should be prompted to scan second barcode, then compare the 2 strings. I need help on how to prompt to second scanning after handling and saving the first input. Should I just fill the buffer with 000 then put a rung to receive data through the port again?