HP PCL/PJL reference - PCL 5 Comparison Guide

2-86 Printer-Specific Differences ENWW
Enter HP-GL/2 Mode Command
The Enter HP-GL/2 Mode command causes the printer to interpret
data as HP-GL/2 commands instead of PCL commands. Three new
parameters are added: one enables stand-alone plotter mode
(
?%-1B), and the other two affect the coordinate system and pen
position when switching into HP-GL/2 (
?%2B and ?%3B).
?%#B
HP-GL/2 mode remains in effect until a Start Raster command
(
?*r#A), Reset (?E), UEL command (?%-12345X), or power-on.
In stand-alone plotter mode (
?%–1B), only a single context can be
used (HP-GL/2 and PCL cannot be merged on the same page).
A value field of 1 or 3 sets the HP-GL/2 pen position and the label
carriage return point to the current PCL CAP. A value field of 2 or 3
transfers the current PCL dot coordinate system, including the PCL
origin and axes; the coordinate system thus established is
independent of the positions of P1 and P2.
This command cannot be executed from display functions mode or
within a binary data transfer. HP-GL/2 ignores this command.
# = –1 - Stand-alone plotter mode (single context)
0 - Use previous HP-GL/2 pen position
1 - Use current PCL CAP
2 - Use current PCL dot coordinate system and old
HP-GL/2 pen position
3 - Use PCL dot coordinate system and the current PCL
CAP
Default =0
Range = 1 to 3