HP-GL/2 for CAD Plotting: What It Is and When AutoCAD Should Use It
HP-GL/2 is a technical plotting language with deep CAD history, but the generic AutoCAD HP-GL/2 driver is not the default choice for every modern plotter—especially modern HP DesignJets.
In one sentence: Use HP-GL/2 when the device/emulation workflow calls for it, not simply because the job is CAD.
What the term means in a CAD plotting workflow
Autodesk’s nonsystem HP-GL/2 driver supports HP-GL/2 pen/inkjet plotters and emulated devices. Autodesk explicitly notes that the generic driver is not optimized for a particular manufacturer’s modern hardware.
Why it matters for AutoCAD users
- Legacy/emulated plotters may still depend on HP-GL/2.
- The generic driver may be useful for non-HP devices that emulate an HP plotter.
- Autodesk advises using the system printer path for modern HP DesignJet devices.
Related CADPlotting guides: System Printer vs Nonsystem Plotter in AutoCAD, HP DesignJet CAD Printing Guide, and What Is a PC3 File in AutoCAD? Beginner Guide.
Practical decision workflow
Step 1 — Identify device language
Where: Manual/vendor support
Do this: Confirm HP-GL/2 support/emulation.
Check: The language is actually relevant.
Step 2 — Check modern driver option
Where: Manufacturer support
Do this: Prefer supported system driver when available.
Check: Avoid unnecessary legacy path.
Step 3 — Create HP-GL/2 PC3 only if needed
Where: PLOTTERMANAGER
Do this: Choose matching emulated model.
Check: Coordinate system is correct.
Step 4 — Test vector+raster sheet
Where: Calibration DWG
Do this: Include linework and raster content.
Check: Limitations become visible.
Step 5 — Document use case
Where: CAD standards
Do this: Record why HP-GL/2 is used.
Check: Future users do not copy it blindly.
Typical problems and the first place to look
| Symptom | Most likely hardware/driver layer | First check |
|---|---|---|
| Modern DesignJet behaves poorly | Generic driver mismatch | Use HP system driver. |
| Plot rotated/offset/mirrored | Wrong emulated model/coordinate system | Select correct HP-GL/2 model. |
| Raster content problematic | Language/driver capability | Use supported raster/system path. |
| Old plotter only works through emulation | Legacy device | Document and isolate workflow. |
Practical example
A non-HP legacy device explicitly emulates HP-GL/2 and the manufacturer documents that mode. Configure the matching HP-GL/2 path, test vector and raster content, and record the emulation requirement. For a modern HP DesignJet, use the supported HP system-printer path instead.
Good office standard
Keep HP-GL/2 as an explicit legacy/emulation standard with a named device and test file. Do not make it the universal CAD driver.
What this does not mean
HP-GL/2 is not synonymous with HP DesignJet, and it is not automatically faster or more accurate than the manufacturer’s current system driver.
Official references
Frequently asked questions
When should I use AutoCAD’s generic HP-GL/2 driver?
Use it when the target device or emulation workflow specifically calls for HP-GL/2 and has been tested with your content.
Should a modern HP DesignJet use the generic HP-GL/2 driver?
Normally no. Autodesk directs DesignJet users to the HP system-printer path; the generic HP-GL/2 driver is not optimized for modern HP hardware.
What should I test before standardizing HP-GL/2?
At minimum, test vector linework, text, raster content, orientation, paper size and a real physical plot on the target device.
Explore more in CAD Printers & Plotters Guide.