Printronix P3000 Series Basic Operation Features, On Line, Off Line, Command Sets Protocol Modes

Basic Operation Features

On Line

The printer functions either “on line” or “off line.” When on line, the printer is capable of receiving data and control commands from the host computer. The message display on the printer control panel indicates that the printer is on line and shows the current print mode.

Off Line

When the printer is off line, communication between the printer and the host computer is temporarily stopped and the message OFFLINE READY appears on the display. Set the printer off line to perform the following tasks:

•	Display/Change Configuration Values	•	Load Paper and Ribbon
•	Run the Self–Test	•	Advance to Top of Form
•	Set Top–of–Form	•	Change Print Modes
•	Enter Hex Dump Mode	•	Adjust Paper Tractors
•	Set Line Spacing	•	Advance Paper

Command Sets (Protocol Modes)

The P3000 Series Multinational printers respond to two different command sets (protocols): P–Series and Serial Matrix.

The protocol is selected from the control panel and must correspond with the programming standard used by the host computer to communicate with the printer. You can select either protocol as required by the application. The P–Series emulation mode generates characters and graphics using Printronix standard P–Series control code protocol. The Serial Matrix emulation mode generates characters and graphics using Serial Matrix control code protocol similar to the IBM Graphics Printer. Refer to the Programming chapter for detailed information on P–Series and Serial Matrix protocols and control code definitions.

Character Set Options

Four basic character set choices are selectable from the control panel: IBM PC, Multinational, ECMA–94 Latin 1, and DEC Multinational. Within each character set, specify the desired specific for- eign language set.

You can also define and download a custom character substitution table to replace any symbol residing in the character library (see page 6–31). This downloading feature is discussed in more detail in the Programming chapter.

2–2 Operation