Touch Panel

[nguyenthucuc 2]

Hi everybody! Now, I want to build the system: Bar-code Reader <==RS232==> Touch Panel <==Rs485==> Pc (computer) Touch Panel in here, I only need choose mono and 5.7''. Who know touch panel that has cost cheep, please help to me! Thanks a lot!

[b_carlton 61]

Does a PLC exist somewhere in this system? How will the touch panel interact with the barcode reader and the PC?