Chapter 10: Bar Code Commands for 9-Pin Printers 109UPC E Bar Code CommandsUPC E bar coding is a six-digit variation of UPC A, used for labeling small items. The digits canbe any ASCII character from 0 to 9 (48 to 57 Dec, 30 to 39 Hex).Select UPC E Bar Code CommandThe command for selecting UPC E isESC DLE A m 1 4 n 3 n 4 n5 0 0 n 8UPC E Parameters n3 and n4These parameters set the vertical length of the bars in units of 6/72", as calculated by theequation[(n 3 x 10) + n 4 ] x 6/72"where the total value must be less than or equal to 25.UPC E Parameter n5This parameter sets the maximum width of one character in 1/144" increments as follows:Table 80: IBM/Epson Select UPC E Command —Character Widths for Parameter n 5 Values (9-Pin Printers)Value of n5 Character Width123456719/144"26/144"33/144"40/144"47/144"54/144"61/144"When calculating the width of the printout, you must take into consideration the Start Codeand Stop Code patterns as shown in the table which follows.Table 81: IBM/Epson Select UPC E Command —Start and Stop Codes for Parameter n 5 Values (9-Pin Printers)Value of n5 Start Code Stop Code12345676/144"9/144"12/144"15/144"18/144"21/144"24/144"15/144"21/144"27/144"33/144"39/144"45/144"51/144"UPC E Parameter n8This parameter sets whether or not the readable characters are printed.n 8 = 1: print readable characters
