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HP 2500 HP PCL/PJL reference - Printer Job Language Technical Reference Manual - Page 205

Spoolers, only HP LaserJet 5/5M, 5Si/5SiMx/5Si Mopier

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Spoolers Spoolers are applications that control and/or monitor print jobs generated by other applications. Spooling applications should use only PJL job-related commands when controlling the flow of print jobs to the printer. Encapsulate each print job with the JOB command at the beginning and the EOJ command at the end (the UEL command is always the first and last command in all PJL jobs). Spoolers perform one or more of the following operations: • Confirm job completion-To notify the spooler when the job is completely processed, use the USTATUS JOB = ON command. When this command is used, the EOJ command at the end of the job triggers the printer to send unsolicited job status information when the last page of the job is printed and in the output tray. • Cancel jobs (only HP LaserJet 5/5M, 5Si/5SiMx/5Si Mopier, and other printers that support job cancel)-The spooler can cancel the print job using the PML printer language or a user can cancel the job using the control panel. If unsolicited job status is enabled, the printer notifies the application that the job has indeed been canceled. • Monitor job progress-If you want the spooler to monitor the page-by-page progress of a job, enable the page status with the USTATUS PAGE=ON command. As each page lands in the output tray, the printer sends an unsolicited page status message to the spooler. • Interact with the user-To flash a message on the printer's display and take the printer off-line, use the OPMSG or STMSG commands. These commands are used to notify the user of a required action before printing can continue. For example, you can display "LOAD BLUE PAPER" and then wait until the user presses the Continue or On Line key. To display a message without taking the printer off-line, use the RDYMSG command. • Select a Printer Language or Print a Banner Page- If the spooler is responsible for printer language selection or printing banner pages, use the ENTER LANGUAGE command. (Performance is not adversely affected if both the application file and the spooler send the ENTER LANGUAGE command.) EN Programming Tips for Using PJL 11-11

Section	Page
Main Menu	3
Inside This Manual	5
Manual Organization	6
Related Documents	9
Manual Conventions	10
Contents	11
Introduction to PJL	15
What is PJL?	15
The Benefits of PJL	17
Who Should Use PJL?	17
Compatibility With Non-PJL Printers	18
PJL Command Syntax and Format	21
Introduction	21
Syntax Conventions	22
Format of PJLCommands	24
PJL Syntax Rules	25
Types of Variables	27
Processing Invalid Commands	29
Using PJL	31
Introduction	31
Overview of How Commands are Used	31
PJL Job Requirements	33
Some Sample PJLJobs	34
What's Next?	35
Command Groupings by Functionality	36
Kernel Commands	41
Introduction	41
Universal Exit Language (UEL) Command	42
ENTER Command	44
COMMENT Command	46
Methods of Printer Language Switching	47
Job Separation Commands	49
Introduction	49
JOB Command	50
EOJ Command	56
PJL Job Security	58
Password Protection of Default Feature Settings	58
Control Panel Lock	59
Disk Lock	59
Job Cancellation	61
Start of Job Notification	61
End of Job Notification	62
Job Cancellation Unsolicited Status	63
Environment Commands	65
Introduction	65
Print Environments	66
Changing Environment Settings	69
Environment Summary	70
PJL Reset Conditions	72
Key Points to Remember About Environments	74
PJL Environment Variables	75
General PJL Environment Variables	76
Port-Specific Variables (LaserJet4PJ Only)	90
PCL-Specific Variables	91
PostScript-Specific Variables	95
ESC/P-Specific Variables	96
Setting the Printer to a Desired State	98
DEFAULT Command	100
INITIALIZE Command	103
RESET Command	106
SET Command	109
Status Readback Commands	113
Introduction	113
Printer Status Requirements	115
Synchronizing Status Readback Responses	115
Format of Status Readback Responses	116
INQUIRE Command	117
DINQUIRE Command	122
ECHO Command	126
INFO Command	128
USTATUS Command	143
TIMED Variable	152
USTATUSOFF Command	154
Job Recovery	155
Sending the Initial Job	155
After Job Failure	156
Device Attendance Commands	159
Introduction	159
RDYMSG Command	160
OPMSG Command	163
STMSG Command	165
PJL File System Commands	169
Introduction	169
FSAPPEND Command	171
FSDIRLIST Command	173
FSDELETE Command	175
FSDOWNLOAD Command	176
FSINIT Command	177
FSMKDIR Command	178
FSQUERY Command	179
FSUPLOAD Command	181
File System Example	183
Job Management	187
Introduction	187
HP LaserJet 8100 Printer	187
HP LaserJet 8500 Printer	191
Programming Tips for Using PJL	195
Introduction	195
PJL Services	196
Print Data Generators	197
Printer Utilities	199
Spoolers	205
Requesting Printer Status	212
Using Status Readback in a Multi-User System	212
Product-Specific Feature Support	223
Introduction	223
PJL Feature Support	224
PJL Environment Variable Support	228
HP LaserJet IIISi Comments	265
Comments about HP LaserJet Printers	266
LaserJet Printers with Reduced-Function Control Panels	273
Color LaserJet Printer Comments	274
HP DeskJet 1200C and 1600C Printer Family Comments	274
HP LaserJet 5Si/ 5SiMx/5Si Mopier Comments	278
HP LaserJet 5Si Mopier Comments	279
HP LaserJet 4000 and 5000 Series Comments	281
HP LaserJet 1100 Series Comments	283
HP LaserJet 2100 Series Comments	284
HP Color LaserJet 4500 Series Comments	285
HP LaserJet 8000 and 8100 Series Comments	286
HP Color LaserJet 8500 Series Comments	287
PJL Command Summary	289
Programming Examples	295
Introduction	295
PJL Status Codes	301
Status Code Groupings	301
Informational Messages (10xxx) *	302
Background Paper Loading (11xyy)	304
Background Paper Tray Status (12xyy)	306
Output Bin Status (15xxy)	307
PJL Parser Errors (20xxx)	307
PJL Parser Warnings (25xxx)	309
PJL Semantic Errors (27xxx)	310
Auto-Continuable Conditions (30xxx)	311
PJL File System Errors (32xxx)	313
Potential Operator Intervention Conditions (35xxx)	314
Operator Intervention Conditions (40xxx)	316
Foreground Paper Loading (41xyy)	319
Paper Jam Messages (LaserJet 5Si/5SiMx only) (42xyy)	320
Optional (External) Paper Handling Device Messages (43xyy)	322
LaserJet 4000 / 5000 Series Paper Jam Messages (44xyy)	323
Hardware Errors (50xxx)	324
Glossary	327
Index	335
Symbols	335
Numerics	335
A	335
B	335
C	335
D	335
E	336
F	336
H	336
I	336
J	337
K	337
L	337
M	337
N	337
O	337
P	338
Q	339
R	339
S	339
T	339
U	339
V	340

Match case Limit results 1 per page

Programming Tips for Using PJL 11-11

Spoolers

Spoolers are applications that control and/or monitor print jobs

generated by other applications.

Spooling applications should use only PJL job-related commands

when controlling the flow of print jobs to the printer. Encapsulate each

print job with the JOB command at the beginning and the EOJ

command at the end (the UEL command is always the first and last

command in all PJL jobs).

Spoolers perform one or more of the following operations:

•

Confirm job completion

—To notify the spooler when the job

is completely processed, use the USTATUS JOB = ON

command. When this command is used, the EOJ command at

the end of the job triggers the printer to send unsolicited job

status information when the last page of the job is printed and

in the output tray.

•

Cancel jobs

(only HP LaserJet 5/5M, 5Si/5SiMx/5Si Mopier,

and other printers that support job cancel)—The spooler can

cancel the print job using the PML printer language or a user

can cancel the job using the control panel. If unsolicited job

status is enabled, the printer notifies the application that the

job has indeed been canceled.

•

Monitor job progress

—If you want the spooler to monitor the

page-by-page progress of a job, enable the page status with

the USTATUS PAGE=ON command. As each page lands in

the output tray, the printer sends an unsolicited page status

message to the spooler.

•

Interact with the user

—To flash a message on the printer's

display and take the printer off-line, use the OPMSG or

STMSG commands. These commands are used to notify the

user of a required action before printing can continue. For

example, you can display “LOAD BLUE PAPER” and then wait

until the user presses the Continue or On Line key. To display a

message without taking the printer off-line, use the RDYMSG

command.

•

Select a Printer Language or Print a Banner Page

— If the

spooler is responsible for printer language selection or printing

banner pages, use the ENTER LANGUAGE command.

(Performance is not adversely affected if both the application

file and the spooler send the ENTER LANGUAGE command.)