614 BarcodesThe CVCC provides the capability to print several standard barcode styleswith or without accompanying human-readable characters. All barcodeencoding algorithms reside in the printer. The user needs to only send theBarcode Command followed by the data to encode, and the printer will do therest. The Barcode styles included in the CVCC are:• Code 39• Code 128• Interleaved 2 of 5• UPC A• UPC E• EAN• Codabar• Identicon 2 of 5• MSI• PostnetBarcodes may be printed in all of the four standard orientations (in Version 2only), with or without human-readable character translation in any of theavailable fonts, and at any height ranging from 0.3 to 9.9 inches. In addition,many of the above styles are available with or without check digits and allallow adjustment of bar/space ratios.To print a barcode, the Barcode Command followed by the data to beencoded must be sent to the printer as part of a Graphics Pass. When theprinter receives the Barcode Command, it first verifies that the data sentadheres to the established specifications for that barcode. If the data does notmeet the specifications, the printer will print out the Barcode Command anddata as an error message.Some barcodes have a fixed number of digits: UPC and EAN, for instance. Ifless than the fixed number of digits is specified, the printer pads to the fixednumber of digits with zeros on the left of the data. If more than the fixednumber of digits is specified, the number is truncated and the remaining digitson the right are ignored.
