Scanlab RTC 5 PC Interface Board Installation And Operation Manual page 537

Normal timed_mark_abs
List Command
Function moves the laser focus for the specified marking duration along a 2D vector from the
current position to the specified position (absolute coordinate values) within a two-
dimensional image field.
Call
timed_mark_abs( X, Y, T )
Parameters
X, Y
T
Comments • Unlike mark_abs, the timed_mark_abs command doesn't execute the marking process
with the specified (via
Instead, the speed (i.e. the number of microsteps) will be adjusted so that the vector
lasts as long as specified (see
page
and the set delays.
• The "laser active" laser control signals are automatically turned on at the beginning of
the command (or remain on after a directly preceding mark or arc command). The
defined scanner and laser delays will thereby be taken into account (see
"Delay Settings for Synchronizing Scan Head and Laser Control", page
other delays are executed in Sky writing mode (see
Exception: zero-length mark commands (see notes on
• During the conversion of specified coordinate values into scan system output values,
any previously defined coordinate transformations, assigned correction tables etc. are
taken into account after successful microvectorization (see
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RTC 4 RTC 5 unchanged functionality (except for the extended range of values, and T < 5 does not
execute timed_mark_abs, but instead mark_abs).
®
In RTC 4 compatibility mode, the RTC
(the permissible range of values is correspondingly reduced).
References mark_abs, timed_mark_rel,
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RTC 5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
absolute coordinates of the mark vector end point in bits as signed 32-bit
values; allowed range: [–8388608 ... 8388607] (out-of-range values will be
edge-clipped). The complete value range [–8388608 ... 8388607] is only
usable as a virtual image field e.g. for (enabled) Processing-on-the-fly
applications. The current coordinates will be clipped to [–524288 ... 524287]
(real image field size) during runtime directly prior to use of the correction
table.
duration of the complete mark vector in microseconds (as a 64-bit IEEE
floating point value); allowed range: [0 ... 167772160]; the parameter will be
rounded to an integer-multiple of 10; out-of-range values will be clipped.
If T < 5, then timed_mark_abs behaves like mark_abs.
set_mark_speed
chapter 8.10 "Timed Vector and Arc Commands",
198). The total marking time is (for T  5) the sum of the specified (rounded) time
timed_mark_abs_3d
or set_mark_speed_ctrl) marking speed.
page 113).
page 102).
page
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5 multiplies the specified coordinate values by 16
chapter 7.2
99). Note that
126).
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