HP PCL/PJL reference - Printer Job Language Technical Reference Manual

EN Programming Tips for Using PJL 11-7

Printer Utility Examples

The following three examples demonstrate the kind of PJL jobs used

by Printer Utilities:

• Jobs that request information and perform printer setup

• Jobs that request information, set features, and print

existing files

• Jobs that monitor printing status

Jobs that Request Information and Perform

Print Setup

The following example demonstrates a job setup utility that first asks

for printer information, then sets default features to a desired state.

This application functions like a remote control panel. This type of

utility enables users to select PJL features before printing from

another application that cannot select PJL features. In this example,

the DEFAULT command is used instead of the SET command, so that

changes apply to all future print jobs.

Note Since this application uses the DEFAULT command, it changes the

User Default Environment and control panel settings. In multi-user

situations, it should be used only by printer administrators to avoid

unexpected results by other users.

(Reading Status Information)

@PJL COMMENT Requesting features <CR><LF>

@PJL ECHO 15:18:25.3 07-25-92 <CR><LF>

[. . application discards any printer status readback

information received before the ECHO response . .]

@PJL DINQUIRE RET <CR><LF>

@PJL DINQUIRE RESOLUTION <CR><LF>

[. . application receives status readback from the

DINQUIRE commands showing that RET = OFF and

RESOLUTION = 300. . . .]

<ESC>%-12345X