The Arc Relative Instruction, Ar - HP 7470A Interfacing And Programming Manual
Graphics plotter
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Also See for 7470A:
- Operator's manual (41 pages) ,
- Interfacing and programming manual (114 pages) ,
- Service manual (141 pages)
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(0.80)
URCLECENTER
(50,50)
+13o°ARC.
0
(o,5o)
(0,40)
START
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The Arc Relative Instruction, AR
DESCRIPTHJN The are relative instruction, AR, provides the means to
draw an arc with the center point located relative to the present pen
position. The are can be drawn clockwise (CW) or counterclockwise
(CCW),with a specified are angle and chord angle. It is only included
in the instruction set of RS—232—C
plotters that have the serial prefix
number 2308A or higher.
M
The instruction can be used to draw an arc of any radius,
length, and smoothness with a single command. The are is drawn from
the current pen position, and its center point is located by relative X,Y
coordinates.
SYNTAX AR
X—increment, Y—increment, arc angle (, chord angle)
terminator
CURRENT
X-INCREMENT
CURRENT PEN
PEN POSITION X"NCREME"T
TV
p0s|T|0N
f_____A_____'
Y
Y'
INCREMENT
INCREMENT
RELATIVE x.v
RE'-AT'VE X-Y
COORDINATE
COORWNATE
(ARC CENTER)
(ARC CENTER)
CONTROLLING THE PEN AND PLOTTING 3-19
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