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CHAPTER 8
HPGL support
OS - Output Status of plotter. Responds with one DECIMAL number
whose hexadecimal bit pattern is:
Bit Condition Value
Tool is up 00
Tool is down 1
1any 0
2any 0
the first OS; command received since
the previous IN; command
1
3
any other 0
4any 1
5ERROR exists 1
6any 0
7any 0
PA - Pen Absolute coordinates
PR - Pen Relative coordinates
PU - Pen Up move
PD - Pen Down move
PG - Page (End of Job) is the end-of-file marker. Failure to use the page
command could result in the job stopping with the pen down or
successive jobs overcutting an earlier one.
SP - Set Pen type (2 = pen plot, other = cut)
VS - Speed Set (centimeters per second)
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