72Chapter 4LOGMARS BarcodeThe LOGMARS barcode is a style used by the U.S. government. Although itwas meant to print with the human-readable characters placed below thebarcode (B), LOGMARS can also be used the with human-readablecharacters embedded in the barcode (E) or not selected (N).Example: The Graphics Pass,^M1010^IFONTS,S,10^G^IBARC,LOGMAR,E,NEWMEX^G^-prints:Code 128 BarcodeWhile many barcode styles are limited to numbers, Code 128 can encodenumbers, letters, and other symbols commonly found on keyboards, such as@, #, and %. The Code 128 barcode is similar to three barcodes in one. Thethree barcode styles are called Code A, Code B, and Code C. Each barcodestyle is designed to encode certain types of data in the most compact way.• Code A encodes upper-case alpha, numeric, and control codes.• Code B encodes upper and lower-case alpha and numeric codes.• Code C encodes digits in pairs.A single Code 128 barcode may consist of all three Code 128 barcode styles.the printer chooses the styles which result in the most compact Code 128barcode for the data to be encoded. Thus, the user does not need to beconcerned about choosing the correct barcode styles since this is doneautomatically.The > (greater than) symbol is a Special character prefix. If a character with adecimal value less than 32 needs to be encoded (i.e., a control character),then send a > followd by the character that is decimal 64 higher than thecontrol code character. If control code characters are encoded, then nonuman-readable characters will print below the barcode. To send the >character itself, send a >0.
