Lexmark Forms Printer 2481 Technical Reference - Page 151
v1, v2 define the bar height., Example, v2, Notes, is the control flag.
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v1, v2 define the bar height. Use the following steps to calculate the values of v1 and v2: 1 Determine the approximate desired height (in inches) of the bar. 2 Let V = 2160 x (height in inches). Round V to the nearest whole number. 3 v1 is the lower byte of V (remainder of V divided by 256). 4 v2 is the upper byte of V (quotient of V divided by 256). Example: 1 Desired height is 0.47 inch. 2 V = round (2160 x 0.47) = round (1015.2) = 1015. 3 v1 = remainder (1015 divided by 256) = 247, xF7 4 v2 = quotient (1015 divided by 256) = 3, x03 v1, v2 are subject to the following limitation: Printer Model 248x 249x Minimum V value 270 288 Minimum v1, v2 values x0E, x01 x20, x01 Notes: • • If you try to use values less than the minimum values, the printer ignores your values and uses the minimum values. The vertical pitch for 248x printers is 1/72 inch. The vertical pitch for 249x printers is 1/180 inch. c is the control flag. c is a multi-purpose parameter. It has three bits that determine check digit, human readable character, and flag character position. x x x x x Flag Char. Human Read. Char. Check Digit b7 b6 b5 b4 b3 b2 b1 b0 b0: check digit 0: If check digit is to be printed, host/software generates it. 1: Printer generates and prints check digit. Section 8: Barcodes 151
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