RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
532
Normal
List Command
timed_arc_rel
Function moves the laser focus for the specified marking duration from the current position along
an arc with the specified angle and center point (relative coordinate values) within a two-
dimensional image field.
Call
timed_arc_rel( dX, dY, Angle, T )
Parameters
dX, dY
relative coordinates of the arc center in bits as signed 32-bit value; allowed
range: [–8388608 … 8388607] (out-of-range values will be edge-clipped).
Angle
arc angle in ° as a 64-bit IEEE floating point value
(positive angle values correspond to clockwise angles);
allowed range: [–3600.0° … +3600.0°] (±10 full circles);
out-of-range values will be edge-clipped.
T
• duration of the complete arc marking process in microseconds (as a 64-bit
IEEE floating point value); allowed range: [0 … 167772160]; the param-
eter will be rounded to an integer-multiple of 10; out-of-range values will
be clipped. If
T
< 5, then timed_arc_rel behaves like arc_rel.
Comments • The coordinates for the arc center are to be supplied as relative coordinates with respect
to the current position. Otherwise, the command is identical to timed_arc_abs (see the
comments there, exception:
T
< 5, see above).
• The current coordinates will be clipped to [–524288 … 524287] (real image field size)
during runtime directly prior to use of the correction table.
RTC
®
4
RTC
®
5 new command
In RTC
®
4 compatibility mode, the RTC
®
5 multiplies the specified arc center coordinate
values by 16 (the permissible range of values is correspondingly reduced to
[–524288 … 524287]).
References timed_arc_abs, arc_rel
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