Compaq DECprint Supervisor (DCPS) for OpenVMS

Compaq DECprint Supervisor (DCPS) for OpenVMS

Release Notes

June 2001

These release notes describe restrictions, usage hints, and other useful information for DECprint Supervisor (DCPS) for OpenVMS.

Revision/Update Information: These release notes supersede all other documentation.

Operating System & Versions: OpenVMS Alpha Version 6.2, 7.2-1 or 7.3
OpenVMS VAX Version 5.5-2, 7.2 or 7.3

Software Version: DECprint Supervisor (DCPS) for OpenVMS, Version 2.0

© 2001 Compaq Computer Corporation

Compaq, VAX, VMS and the Compaq logo Registered in U.S. Patent and Trademark Office. DECnet and OpenVMS are trademarks of Compaq Information Technologies Group, L.P. in the United States and other countries.

Microsoft and Windows are trademarks of Microsoft Corporation in the United States and other countries.

All other product names mentioned herein may be trademarks or registered trademarks of their respective companies.

Confidential computer software. Valid license from Compaq required for possession, use, or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license.

Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is provided "as is" without warranty of any kind and is subject to change without notice. The warranties for Compaq products are set forth in the express limited warranty statements accompanying such products. Nothing herein should be construed as constituting an additional warranty.

The DECprint Supervisor documentation set is available on CD-ROM.

Contents Index



The primary source of information about DECprint Supervisor (DCPS) for OpenVMS, Version 2.0 is the following set of software manuals:

Release Notes Contents

These release notes provide detail on the following:

SPD Contents

For information on licensing requirements and the features available with each license, see the DECprint Supervisor Software Product Description (SPD 44.15.xx).

Chapter 1
DCPS Version 2.0 Information

This section describes changes included in DCPS V2.0. You can find more information for several of these changes elsewhere in these release notes.

1.1 DCPS Version 2.0 Changes

1.1.1 DCPS Licenses Eliminated

Starting with DCPS V2.0, the need for DCPS-OPEN and DCPS-PLUS licenses has been eliminated. The right to use all features of DCPS is now included with the OpenVMS operating system license.

1.1.2 New Printers Supported

DCPS V2.0 adds support for the following printers:

HP Color LaserJet 4500
HP Color LaserJet 4550
HP LaserJet 2100
HP LaserJet 4050
HP LaserJet 8100
HP LaserJet 8150
Lexmark Optra C710
Lexmark Optra S 1250
Lexmark Optra S 1255
Lexmark Optra S 1650
Lexmark Optra S 2450
Lexmark Optra S 2455
Lexmark Optra Se 3455
Lexmark Optra T610
Lexmark Optra T612
Lexmark Optra T614
Lexmark Optra T616
Lexmark Optra W810
Tektronix Phaser 740
Tektronix Phaser 750
Tektronix Phaser 850
Xerox DocuPrint N2025
Xerox DocuPrint N2125
Xerox DocuPrint N2825
Xerox DocuPrint N3225
Xerox DocuPrint N4025

You can find more information in Chapter 4 of these release notes.

1.1.3 Installation Procedure Changed

When installing DCPS when no previous DCPS version is installed, the installation procedure asks about the location for layup files. Previously, if the default location was accepted, the procedure would indicate the directory did not exist and ask if it should be created. Since this directory will always be created regardless of the answer to the question, the installer will no longer be told the directory does not exist and will no longer be asked if it should be created. The installer will continue to be asked about creating the directory if the default location is not chosen.

1.1.4 Tray Names Added

The front input tray on the GENICOM LN28 printer can now be selected with the name MULTIPURPOSE in addition to the name FRONT.

Input tray 1 on the HP LaserJet 4000 and 4050 printers can now be selected with the name MULTIPURPOSE in addition to the name TRAY_1.

1.2 DCPS Version 2.0 Fixes

The following problems are fixed in DCPS V2.0.

1.2.1 Output Trays Not Selectable

With DCPS V1.8, it was not possible to select output trays on the Lexmark Optra S 1855 and the Tektronix Phaser 780 printer.

1.2.2 PCL Translator Character Incorrect

When using the Swedish/Finnish character set, the DCPS PCL translator would print the 'å' character incorrectly as 'á'.

1.2.3 Help File Incomplete

With DCPS V1.8, part of the online help about Lexmark printers was missing from the help file.

1.2.4 IVP Fails with ODS-5 Extended File Parsing

If the installation process was running with ODS-5 file parsing (SET PROCESS=EXTENDED), the DCPS IVP would fail.

Chapter 2
DCPS Restrictions

The following sections identify the current restrictions that exist with DECprint Supervisor. See DECprint Supervisor for OpenVMS System Manager's Guide and User's Guide for printer-specific restrictions.

2.1 Job Remains in Starting State for Raw TCP/IP Queue

If you set up a DCPS queue that uses a raw TCP/IP connection and specify an incorrect TCP port number for the printer, any print jobs that you submit to the queue will remain in a starting state. DCPS cannot determine that you have provided an incorrect port number, because the network failure that it receives is no different than if the printer had been busy or offline.

Note that a print job in a raw TCP/IP queue may remain in a starting state for other reasons as well.

Check the documentation for your printer, network interface card, print server, or terminal server to determine the correct TCP port number to use. The TCP port number may also be listed in Table A-1.

2.2 Connection Terminations for Raw TCP/IP Queue

You may get CONTERMINATED errors for long print jobs when using raw TCP/IP connections. For jobs that consist of a single file or only use the native PostScript capability of the printer (for example, they do not use native PCL), these errors are most likely to occur at the end of the job, with job trailer pages (if specified for the queue) and print job accounting (if enabled) being lost. For other jobs, these errors may occur in the middle of the job, with subsequent documents as well as the trailer pages and accounting information being lost. DCPS requeues the terminated jobs, placing them in a Holding state so that you can reprint them once you resolve the termination problem.

Some network devices, including the HP JetDirect cards, drop a TCP/IP connection if they do not receive any input from the host system within a specified amount of time. This is a feature, meant to prevent host software from monopolizing the device. DCPS, however, waits for the printer to acknowledge that previous documents are printed before switching from PostScript to some other native printer language and also before printing a trailer page and gathering accounting information. Even though the printer may be busy, the NIC may not receive any more input from DCPS before the timeout is reached.

If your NIC allows you to alter the TCP/IP idle timeout value, you can work around this problem by disabling or increasing the timeout. Check your NIC documentation to determine if this is possible, and how to do it. Then release any requeued jobs for which desired output was lost, and delete the other requeued jobs.

Note that it is the length of a job in time (versus size) that is important. For example, a very small PostScript program can take a very long time to print. Hence, it is difficult to predict how large a timeout is adequate.

2.3 NOT_READY Warnings for Unavailable Raw TCP/IP Printer

If a job is queued to a printer that uses a raw TCP/IP connection, and the printer is busy or offline, you will get NOT_READY warning messages for the printer.

If you believe or determine that the printer is busy, you can ignore these messages. DCPS cannot, unfortunately, differentiate between the printer being busy, offline, or otherwise unavailable.

2.4 Translators Do Not Generate Color PostScript

The translators provided with DCPS (for example, ReGIS) do not generate color PostScript commands, even if your source file contains color information. The colors are instead translated to various shades of gray.

2.5 Job Trailer Page Jogs with PostScript Level 2 Printers

When job jogging is enabled on PostScript Level 2 printers to separate jobs by offsetting them, jogging occurs between the body of a job and its trailer page (if any).

2.6 Unable to Perform ANSI Tray Selection for Certain Printers

An attempt to print an ANSI file containing a tray selection escape sequence might fail, depending on which printer you are using. If so, the job might abort with a PostScript configuration error, with the offending command being "setpapertray".

Also, some printers, such as the Compaq Laser Printer LN16 and GENICOM microLaser 170, have input trays with PostScript tray numbers of 0. The ANSI escape sequence DECASFC is used to select trays, but a value of 0 means "no tray change" and selecting tray 0 is therefore not possible. For example, an ANSI escape sequence of


does not select tray 0, but rather indicates no change of tray.

A workaround to this problem is to create and subsequently invoke a setup module that redefines the settoptray, setbottomtray, setlcittray and setmanualfeedtray PostScript commands within the TRN$XLATE_DICT dictionary.

For example, for a Compaq Laser Printer LN16, DIGITAL Laser Printer LN15 or LN15+, or GENICOM microLaser 170, you should create a setup module that contains the following definitions for settoptray, setbottomtray and setmanualfeedtray:

   /settoptray        { statusdict begin 0 setpapertray end } def 
   /setbottomtray     { statusdict begin 1 setpapertray end } def 
   /setmanualfeedtray { statusdict begin 3 setpapertray end } def 

For an HP LaserJet 4M Plus, you should create a setup module that contains:

   /settoptray    { statusdict begin 3 setpapertray end } def 
   /setbottomtray { statusdict begin 0 setpapertray end } def 
   /setlcittray   { statusdict begin 1 setpapertray end } def 

PostScript tray numbers are documented in the User's GuideUser's Guide.

2.7 AppleTalk Queues Do Not Start or Jobs Remain in Starting State

The first print queue in the process to use AppleTalk fails with the following error and the queue does not start:

  %DCPS-W-ATK_FOR_VMS, Error connecting to AppleTalk for VMS driver 

If other queues using the AppleTalk interconnect are started on that same process this error is not reported. These queues will start, but jobs on these queues remain in the "starting" state.

If a queue using the AppleTalk interconnect is started before the AppleTalk network software is running, then the queue might start but will not be functional. This occurs when DCPS is running as a multistreamed symbiont and another print queue is running in the same process.

To recover from such an error, stop all queues supported by any currently running symbiont processes that have detected that the AppleTalk network software is not running (one error message is generated per symbiont process). Restart the AppleTalk software and the queues.

To avoid this problem, run the AppleTalk network software before starting any DCPS print queues.

2.8 Some Printers Do Not Send Status Messages to the Host

Some PostScript printers, because of their internal architecture, report status information only to the printer console and not to the host system with which they are communicating. As a result, DCPS is not aware of some status conditions (for example, paper out, paper jam, page too complex, cover open, etc.) and cannot report them to you. Instead, the DCPS queue will enter the Stalled state if DCPS subsequently attempts to communicate with the printer. This subsequent attempt may come during the same job that first experienced the problem or in a later one.

The following is a list of some of the printers which exhibit this behavior:

- DEClaser 5100 printer
- LN17ps printer
- some HP LaserJet III and IV printers (but not the HP LaserJet III with the HP PostScript-Plus Level 2 cartridge or the HP LaserJet IIISi if jam recovery is disabled)

2.9 Printer Name Is Not Always Printed Correctly

When multinational characters are used in the PostScript "printername", the printer name printed on the bottom of separation pages may be printed in the wrong character set.

2.10 DDIF Printing Requires DECwindows Software or DECimage Application Services

To print DDIF encoded bitonal images, DCPS requires that either DECwindows software or Version 3.1 of DECimage Application Services (DAS) be installed on your system. DAS is only available on OpenVMS VAX systems.

2.11 Compatibility of NUMBER_UP and PostScript Drivers

PostScript files created with the LaserWriter 8.0 or 8.1.1 driver or the Adobe 2.1.1 Windows driver in conjunction with the application may produce PostScript files that do not print as expected with NUMBER_UP greater than 1.

Symptoms include pages being clipped, printed outside of the NUMBER_UP page spots, or being improperly scaled.

2.12 LIST Translator Ignores PAGE_SIZE Parameter

The LIST translator ignores the PAGE_SIZE parameter when formatting pages. It creates pages with maximum content at a size adequate for both A (Letter) and A4 paper:

PORTRAIT ORIENTATION: 80 columns, 70 lines
LANDSCAPE ORIENTATION: 150 columns, 66 lines

It is still possible to use PAGE_SIZE and SHEET_SIZE parameters together (with the DCPS-PLUS license) to scale the logical page onto a different size sheet.

2.13 Embedded PJL Commands Discarded; Avoid Binary Mode

Drivers that create files for PJL printers, such as those for the DEClaser 5100 and the HP LaserJet IV family, include printer control commands in HP Printer Job Language (PJL). DCPS filters out and discards that data. Therefore, printer options selected by such drivers do not affect the print job.

When using these drivers, do NOT select binary mode. It will insert additional commands into the file that can cause incorrect behavior when printing via DCPS. The exact form of behavior depends on which printer is actually connected to the queue and whether or not the job passes through a DCPS translator.

2.14 Unreliable Communication After Errors on Some Printers

Unexpected errors can occur at the end of a print job when printing to some printers using the AppleTalk interconnect. The printers which can exhibit problems include the LaserWriter Pro 600, LaserWriter Pro 630, the LaserWriter IIg, and the LaserWriter IIf. Generally, the unexpected error occurs when an explainable error occurred during the print job; for example, a PostScript error which causes the PostScript interpreter to "Flush to the EOJ", or a timeout error while waiting for manual feed. The behavior a user may see includes one of more of the following:

The user's part of the print job prints as expected. The unexpected error occurs during the end of job processing (for example, getting the page count or the job trailer page printed) done by the DECprint Supervisor. Once the offending job is complete, subsequent jobs print as expected. No system operator intervention is needed.

2.15 Deleting Job When Using AppleTalk

When printing using an AppleTalk interconnect, a request to delete a job (DELETE/ENTRY) is accomplished by closing the connection to the printer. The AppleTalk protocol does not provide for interrupting the PostScript interpreter; therefore, the printer will continue to print page descriptions that are contained in its buffer before it stops printing the job. A job trailer page will not be printed.

2.16 Avoid STOP/QUEUE/RESET Usage for PrintServer Printer Which Is Rejecting Connections

If you issue a STOP/QUEUE/RESET command for a queue to a DIGITAL PrintServer printer while there is a job in the "Starting" state and while the printer is rejecting connections (because, for example, the PrintServer is powered off or is booting), the queue will stop. Occasionally the symbiont process will not terminate. Avoid issuing this command until the PrintServer printer becomes available. If the job is in the "Starting" state and also in the PrintServer printer's job queue, a STOP/QUEUE/RESET will execute correctly.

2.17 No Job Trailer Page on DELETE/ENTRY

If you issue a DELETE/ENTRY command when the printer is printing the job trailer page, it is possible to delete the printing of this page. Also, if you issue a DELETE/ENTRY command for a job printing on a PrintServer printer after all the data for the file is sent, it is possible that the job trailer page will not print.

2.18 Problems with PostScript Files When Printing with /COPIES

When you use the /COPIES qualifier with a PostScript file, DCPS surrounds each file with a PostScript "save" and "restore" to avoid exhausting virtual memory in the printer.

However, there are infrequent cases when the print job aborts with an invalid restore error message. If this occurs, use the /JOB_COUNT qualifier instead of /COPIES.

2.19 Problems Using PAGE_LIMIT with /JOB_COUNT

If you use the PAGE_LIMIT parameter with the /JOB_COUNT qualifier, you are apt to get undesired results. In particular, if your intent is to suppress some initial pages of your job, DCPS will suppress them for the first copy of the job but print all pages of subsequent job copies. If your intent is to suppress some of the trailing pages of your job, DCPS will suppress them for the first copy of the job and omit subsequent job copies.

If you want multiple copies of your job with some pages suppressed, issue the PRINT command the desired number of times rather than using the /JOB_COUNT qualifier.

2.20 Printers with Auto-Sensing Features

Many printers can sense the data type of a print job. Such printers allow you to specify how and whether the auto-sensing feature is enabled, per interconnect channel, through the front panel.

For most printers that offer this feature, the DECprint Supervisor software works properly when the printer is set to "PostScript" mode, or to "Automatic" mode. You must set such printers to operate in one of these modes before starting the DCPS queues. The DCPS software does not operate properly if the printer is set to "PCL" mode.

See Chapter 4 and the DECprint Supervisor for OpenVMS System Manager's Guide for additional information.

2.21 Setting I/O Buffers Too Small May Produce OPCOM Errors

If the size of the I/O buffers, set by the SYSGEN parameter MAXBUF, is too small, the print queue will be stopped, and the following message will be displayed to OPCOM:

%SYSTEM-E-EXQUOTA, process quota exceeded 

If this error occurs, increase the value of the SYSGEN parameter MAXBUF.

2.22 Cannot Start Queue for PrintServer Printer

Because of a CPAP protocol bug in some versions of DIGITAL PrintServer Software, DCPS symbionts can be given a badly formatted packet in response to a resource query. The bad packet prevents a symbiont from starting.

The problem is triggered by loading enough resources to require more than one packet describing the resources loaded to be returned. The suggested workaround is to load fewer resources. Empirical testing has found the limit to be 7 fonts.

This problem is fixed in version S5.0-29 and later of the PrintServer Software.

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