Scanlab RTC 5 PC Interface Board Installation And Operation Manual page 355

Normal mark_ellipse_abs
List Command
Function moves the laser focus at marking speed along an elliptical arc around the specified
midpoint (absolute coordinate values) within a two-dimensional image field.
Call
mark_ellipse_abs( X, Y, Alpha )
Parameters
X, Y
Alpha
Comments • The parameters for mark_ellipse_abs only determine the position and orientation of
the to-be-executed arc. Its shape must be specified via
mark_ellipse_abs. For descriptions of the individual parameters, also see
• If the arc starting point defined via mark_ellipse_abs and
current position, then a hard jump to the starting point will be executed prior to
marking (also see notes on
• Also see all comments for arc_abs.
® ®
RTC 4 RTC 5 new command
®
In RTC 4 compatibility mode, the RTC
coordinate values by 16 (the permissible range of values is correspondingly reduced to
[–524288 ... 524287]).
Version info • Available beginning with version DLL 518, OUT 517, RBF 515
• For older RTC
the command is neither executed nor replaced by
RTC5_TYPE_REJECTED).
References set_ellipse, mark_ellipse_rel, set_mark_speed, set_scanner_delays,
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RTC 5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
absolute coordinates of the ellipse midpoint in bits as signed 32-bit values;
allowed range: [–8388608 ... 8388607] (out-of-range values will be edge-
clipped).
Angle (in ° as a 64-bit IEEE floating point value) between elliptical half-axis a
(defined via set_ellipse) and the X axis
(the angle is referenced to the positive X direction, positive angle values
correspond to counterclockwise angles);
Alpha gets normalized to the value range [0...<360°].
page 94).
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®
5 boards with DSP version numbers < 2
set_ellipse
set_ellipse
5 multiplies the specified ellipse midpoint
(get_rtc_version
list_nop (get_last_error
before marking via
page 94.
doesn't equal the
bits #16-23),
return code:
arc_abs
355