wazed

Thanks for the detailed explanation. Ill try it out either way.

Im printer is looking for ASCII data as external input from PLC. Im only focusing on sending the data. Im not sure what you meant by start or end code. If you elaborate, that would be great

Good morning, Im reaching out to you for an inquiry about SCU22 serial card. Currently Im working on this project where Im trying to integrate NJ PLC and HX nitro inject printer through RS-232 serial cable. I have programmed the printer and the PLC but for some reason it's not sending the data Im looking for. I have double checked the baud rate, stop bits and Parity. They are similar to the printer. At this point I think it might be the serial card or PLC program and there's no way to verify it. Inject printer is looking for ASCII data to receive. But sometimes I receive "??" randomly and most of the time I dont receive anything at all. I have attached a few images for your review. It would be great to have your input.