Commands; Modes Of Operation - Printronix L7032 Programmer's Reference Manual

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Modes Of Operation

VGL has two basic modes of operation: Normal mode and Graphics mode. In
Normal mode, the data stream passes unchanged to the printer until the
Special Function Control Code (SFCC) and Graphics Mode Enable command
are detected, indicating that special Graphics mode functions follow. All of the
printer standard features operate in Normal mode (such as the EVFU, plot,
hex dump) and the printer responds to command and control codes as
described in the printer User's Manual.
In Graphics mode, you can generate alphanumeric characters, graphic
components and bar codes. Once the Graphics mode is enabled, specific
command sequences are used to generate a variety of graphics. The
command parameters define height, width, location, and type of graphic
(boxes, lines, alphanumeric characters).
Three types of command sets are used in the Graphics mode:
• standard graphics
• extended graphics
• extended graphics/high resolution.
Figure 1 illustrates the relationship between the Normal and Graphics modes
of operation as described above. In addition, at the beginning of each
command in this chapter, the graphics mode(s) in which that command
operates are listed.

Commands

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