RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
537
Normal
List Command
timed_mark_abs
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
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.
T
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.
Comments • Unlike mark_abs, the timed_mark_abs command doesn’t execute the marking process
with the specified (via set_mark_speed or set_mark_speed_ctrl) marking speed.
Instead, the speed (i.e. the number of microsteps) will be adjusted so that the vector
lasts as long as specified (see chapter 8.10 "Timed Vector and Arc Commands",
page 198). The total marking time is (for
T
5) the sum of the specified (rounded) time
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 chapter 7.2
"Delay Settings for Synchronizing Scan Head and Laser Control", page 99). Note that
other delays are executed in Sky writing mode (see page 113).
Exception: zero-length mark commands (see notes on page 102).
• 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 page 126).
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
®
5 multiplies the specified coordinate values by 16
(the permissible range of values is correspondingly reduced).
References mark_abs, timed_mark_rel, timed_mark_abs_3d
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