A barcode or 1D code (EAN 8 or EAN 13) represents data by displaying a series of vertical lines of varying width.They can be read with a RS 232 barcode reader that can be connected to the controller. Respect of the ISO/IEC 15416 standards is required to optimize reading and use of data. Barcode laser marking is an efficient way to mark easily readable barcodes thanks to its precision and robustness.