RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
349
Normal
List Command
mark_abs
Function moves the laser focus at marking speed along a 2D vector from the current position to the
specified position (absolute coordinate values) within a two-dimensional image field.
Call
mark_abs( X, Y )
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.
Comments • If the marking speed has not been previously explicitly set via set_mark_speed or
set_mark_speed_ctrl, then the marking will be executed at a predefined marking
speed of 1000 bits per ms.
• 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).
In RTC
®
4 compatibility mode, the RTC
®
5 multiplies the specified coordinate values by 16
(the permissible range of values is correspondingly reduced).
References set_mark_speed, set_scanner_delays, mark_rel, arc_abs, timed_mark_abs
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