HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

EN PE, Polyline Encoded 20-35
The PE command represents vectors in base 64 (default) or base 32
(explained under Encoding PE Flag Values and X,Y Coordinates).
In parameter value data, all spaces, delete characters, control
characters, as well as ASCII characters 128-160 and 255 are ignored.
z No parameters — Updates the Carriage Return point. The PE
command without parameters does not affect the pen’s current
location or up/down status.
z Flag — Indicates how the printer interprets subsequent values.
Flags are ASCII characters and are not encoded. The printer
disregards the eighth bit of a flag (fro example, a character code
of 61 and a character code of 189 both send a ‘=’ [the absolute
flag]).
* We recommend you always follow a pen up flag with a relative move
of (0,0). This ensures that the next plotting coordinates are drawn.
Table 20-22
Flag Meaning Description
: Select Pen Indicates that the subsequent value is
the desired pen number. A PE command
without pen select defaults to the
currently selected pen.
<
Pen Up
Raises the pen and moves to the
subsequent coordinate pair value. (All
coordinate pair values not preceded by
a pen up flag are considered pen down
moves.)
*
> Fractional
Data
Indicates that the subsequent value
specifies the number of fractional binary
bits contained in the coordinate data.
Default is zero.
= Absolute Indicates that the next point is defined by
absolute coordinates.
7 7-bit Mode Indicates that all subsequent coordinate
pair values should be interpreted in 7-bit
mode. Once you send a seven-bit flag,
base 32 is used and eighth bits are
ignored for the remainder of the
command.