32 Line Matrix Printer Code V Programmer's Reference Manual

2 Commands

Modes of Operation

The Code V has two modes of operation: Normal and Graphics. In the 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 the Normal mode (such as the EVFU,

plot, hex dump) and the printer responds to control codes.

In the Graphics Mode, you can generate alphanumerics, 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).

Two types of command sets are used in the Graphics Mode: standard

graphics and extended graphics.

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.

Figure 1. Modes of Operation

IGP

Modes of Operation

Normal Mode Graphics Mode

(Table 1)

Standard Graphics

(Table 2)

Extended Graphics

(Table 3)

Passes data directly

through to printer.

Enabled with PY

Command (see page 87).

An alphanumeric

command from Table 1

must be entered before

using an Extended

Graphics command.