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HP 2500 HP PCL/PJL reference - Printer Job Language Technical Reference Manual - Page 271

Backward-Compatibility Mode, 4P, 4MP, 4PJ, 4LJ Pro, 4LC, 4000 series - color laserjet not printing color

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Note Backward-Compatibility Mode Printers that support the backward-compatibility mode: HP LaserJet 4, 4M, 4 Plus, 4M Plus, 4V, 4MV, 4Si, 4SiMx, 4L, 4ML, 4P, 4MP, 4PJ, 4LJ Pro, 4LC, 4000 series, 5, 5M, 5L, 5P, 5MP, 6L, 6P, 6MP, 5Si, 5SiMx, 5Si Mopier, HP Color LaserJet, HP Color LaserJet 5, 5M, 1100 series, 2100 series, 4500 series, 5000 series, 8000 series, 8100 series, 8500 series If the printer detects PCL data immediately after a job boundary, it enters a backward-compatibility mode that responds like an HP LaserJet III printer. This lasts until the next job boundary is detected. For backward- compatibility mode to occur, the PERSONALITY variable must be set to AUTO or PCL, and the job must contain only PCL data-if any PJL commands are received during the job, the printer does not enter backward-compatibility mode. There are two differences between backward-compatibility mode and normal operating mode. In backward-compatibility mode, when a PCL printer language reset (E) is executed, instead of causing the PJL Current Environment variables to be loaded into the Modified Print Environment, the User Default Environment settings (control panel values) are loaded. This is the same way the LaserJet III printer works. Because HP LaserJet 4L, 5L, 6L, and 1100 series printers do not support job boundaries (JOB/EOJ), they always load the PJL Current Environment variables into the Modified Print Environment after receiving an E reset. Also, when a backward-compatible job ends with a partial page (one not terminated with a form feed or PCL printer language reset) and the job times out, the job does not immediately end, printing the partial page. Instead, the printer waits to see if the next job sent consists of more PCL data (from the same I/O port), which it then appends to the partial page already in the printer. (This works the same way as the HP LaserJet III printer, which does not have a job timeout.) If PJL data is received instead, the partial page is printed before the new PJL job is executed. EN Product-Specific Feature Support A-49

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

Product-Specific Feature Support A-49

Backward-Compatibility Mode

If the printer detects PCL data immediately after a job boundary, it

enters a backward-compatibility mode that responds like an HP

LaserJet III printer. This lasts until the next job boundary is detected.

For backward- compatibility mode to occur, the PERSONALITY

variable must be set to AUTO or PCL, and the job must contain only

PCL data

—

if any PJL commands are received during the job, the

printer does not enter backward-compatibility mode.

There are two differences between backward-compatibility mode and

normal operating mode. In backward-compatibility mode, when a PCL

printer language reset (<ESC>E) is executed, instead of causing the

PJL Current Environment variables to be loaded into the Modified

Print Environment, the User Default Environment settings (control

panel values) are loaded. This is the same way the LaserJet III printer

works.

Note

Because HP LaserJet 4L, 5L, 6L, and 1100 series printers do not

support job boundaries (JOB/EOJ), they always load the PJL Current

Environment variables into the Modified Print Environment after

receiving an <ESC>E reset.

Also, when a backward-compatible job ends with a partial page (one

not terminated with a form feed or PCL printer language reset) and

the job times out, the job does not immediately end, printing the

partial page. Instead, the printer waits to see if the next job sent

consists of more PCL data (from the same I/O port), which it then

appends to the partial page already in the printer. (This works the

same way as the HP LaserJet III printer, which does not have a job

timeout.) If PJL data is received instead, the partial page is printed

before the new PJL job is executed.

Printers that support the backward-compatibility mode:

HP LaserJet 4, 4M, 4 Plus, 4M Plus, 4V, 4MV, 4Si, 4SiMx, 4L, 4ML,

4P, 4MP, 4PJ, 4LJ Pro, 4LC, 4000 series, 5, 5M, 5L, 5P, 5MP, 6L, 6P,

6MP, 5Si, 5SiMx, 5Si Mopier, HP Color LaserJet, HP Color LaserJet

5, 5M, 1100 series, 2100 series, 4500 series, 5000 series, 8000

series, 8100 series, 8500 series