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.

zNo parameters — Updates the Carriage Return point. The PE command without parameters does not affect the pen’s current location or up/down status.

zFlag — 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]).

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

Indicates that the subsequent value

 

Data

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.

 

 

 

*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.

EN

PE, Polyline Encoded 20-35

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Image 495
HP 5961-0509 manual Flag Meaning Description