Cognitive Solutions B780 Select bar code width, Page mode, Sets the bar code width to n dots

106 Chapter 5: Programming commands

Each row has a left and right row indicator with a data region between. The left-most character in the top row of the data region is the total number of characters in the data region, excluding error correction characters. Characters within the data region are designed to be read from left to right, starting on the top row, immediately after the length- defining character. The maximum characters in the data region are 928.

Related Information:

The “Set bar code width” command (1D 77 n) affects the x dimension and row height for PDF 417. See chart below.

n value	x dimension	row height
2	2	7
3	3	10
4	4	13
5	5	17
6	6	20

Select bar code width

ASCII	GS w n
Hexadecimal	1D 77 n
Decimal	29 119 n
Value of n:	2, 3, 4, 5, 6
Default:	3 for receipt; 2 for slip

Sets the bar code width to n dots.

Formulas

n/8 mm (n/203 inch) for receipt. n/5.7 mm (n/144 inch) for slip.

Page mode

Page mode is one of two modes that the A776 printer uses to operate. Standard mode is typical of how most printers operate by printing data as it is received and feeding paper as the various paper feed commands are received. Page mode is different in that it processes or prepares the data as a “page” in memory before it prints it. Think of this as a virtual page. The page can be any area within certain parameters that you define. Once the printer receives the (0 × 0C) command, it prints the page and returns the printer to standard mode.

The select page mode command (1B 4C) puts the printer into page mode. Any commands that are received are interpreted as page mode commands. Several commands react differently when in standard mode and page mode. The descriptions of these individual commands in this chapter indicate the differences in how they operate in the two modes.

A776 (B780) Programming Guide A776-PG00001 C 12/09