number of plt types

How many different plt file types are there?

I've installed a PCL5e (I think it covers the HPGL and HPGL2 formats) driver for my LaserJet5simx and the plt files I have still print out as Wingdings.

I've also tried opening the files with plt viewing programs such as Varyview but they won't come up as anything.

 

HPGL/2 can be part of PCL5e and most printers that work with PCL5e can also
plot HPGL/2; but this doesn't imply that when you print using a PCL5e
driver, the output will be HPGL/2. Try one of AutoCAD's own (= HDI) HPGL/2
drivers for a DesignJet (not a driver for a Laserjet - the output would
still be PCL) and seen whether your printer can digest the output. This
output can also be viewed with HPGL/2 viewers.

Plt is only a file name extension that AutoCAD gives to plot files it
creates with *any* printer driver. The number of printing/plotting languages
is limited to a handful of "families", but basically the answer to your
first question is "as many as the number of different printer/plotter
models".

Govert

driver for my LaserJet5simx and the plt files I have still print out as
Wingdings.

Varyview but they won't come up as anything.