Microcom 412 - Manual (Page 84)

Bar Codes Chapter 8
412 Operators Manual 76
8.2 DESIGNING WITH BAR CODES
When 0 and 180 degree bar codes are X multiplied (CMX), the space between characters is
also multiplied to maintain the correct ratios. The printer will do this internally. Therefore, when
multiplying bar codes, use the default value for the spacing element (SP) in the field
parameters. On some bar codes (CODE 39 ...) you may choose a larger spacing than the
printer default, but you may not use a smaller spacing.
If the Y multiplier (CMY) is not multiplied, a bar code with a vertical length of one dot is
produced. Of course, this will not be picked up by scanners. Multiply the Y co-ordinate to the
proper height. For example: Multiply the Y
co-ordinate (CMY) by 203 to create a one
inch tall bar code.
If the bar code is in a ladder (or vertical)
orientation (90 and 270 degrees), multiply
CMY for width, and CMX for bar code
length. It may be necessary to slightly
adjust the contrast window and/or adjust
the print speed due to the "bleeding"
effect caused by heat build up in the print
head.
Program sample: Bar codes in four
rotations (See Figure 12)
^D57
9,814,609
1,410,30,11,1,4,,4
2,410,100,11,1,2,,4
Bar Code Rotations
2,410,137,3,16,2,,4,3,40 Figure 12
3,680,300,11,1,2,3,4
3,640,300,3,16,2,3,4,40,3
4,410,500,11,1,2,1,4
4,410,465,3,16,2,1,4,3,40
5,140,300,11,1,2,2,4
5,180,300,3,16,2,2,4,40,3
^D56^D2
ROTATIONS
000 DEGREES
090 DEGREES
180 DEGREES
270 DEGREES
^D3
8.2.1 BAR CODE HUMAN READABLES
Text conversion identifiers (TCI position in field description) 32 and 33 refer to the human
readable portion of UPC-A bar codes. They are designed to be used in conjunction with UPC-
A bar codes, They only create the text equivalent of the UPC-A bar code and optionally add
the extended portions of the bar code lines. This lower portion must them be lined up with the
upper to create a correct UPC-A bar code. (See Figure 13)