RTC6 boards
Doc. Rev. 1.0.21 en-US
8 Advanced Functions for Scan Head Control and Laser Control
238
3D Commands
These are, for example, the following
RTC6 commands:
• [*]3d[*]
• goto_xyz
• set_offset_xyz and set_offset_xyz_list
Except for the additional motion in the third
dimension, the 3D commands function identically to
their corresponding 2D commands:
• Specified vectors and arcs are split-up into
Microsteps, see Chapter 7.1.2 ”Microstepping”,
page 140
• The jump speed and mark speed are specified by
set_jump_speed and set_mark_speed, see
Chapter 7.1.1 ”Marking with Vector Commands
and “Arc” Commands”, page 136. As for timed
Vector Commands, the speeds are automatically
determined from the specified jump or marking
duration
• 3D Image Field correction is applied in
accordance with the 3D correction table assigned
by select_cor_table or select_cor_table_list, see
Chapter 7.3.5 ”Image Field Correction and
Correction Tables”, page 173
• For Jump Commands and [*]mark[*] Commands,
the Laser Control Signals are switched on and off
while taking delay settings into account, see
Chapter 7.2 ”Delay Settings – Coordinating
Scan Head Control and Laser Control”, page 145
For the value range of the data, see Section
”Compatibility Modes”, page 168.
The calibration factor K
xy
can be read out from the
correction table used by get_table_para.
In RTC4 Compatibility Mode and
RTC5 Compatibility Mode, the three coordinate
values are always scaled up to 20-bit values internally,
so that the three spatial directions are treated equally
with regard to the jump speed or mark speed.
The 3 coordinate values are internally always scaled
up to 20-bit values, so that the three spatial
directions are treated equally with regard to the
jump speed or mark speed.
With big z jumps, observe the different dynamics of
varioSCAN and 2D scan systems.
Notes
• After “vector-controlled laser control” has been
activated by set_vector_control (
Ctrl
= 7), the
para-Mark Command and para-Jump Commands
can be used to set a dynamic focus shift linearly
along the mark or jump vector, see Section
”Vector-Defined Laser Control”, page 206. See
also set_defocus or set_defocus_list.
• The size of the usable Image Field
(1)
and the focus
shift in the z direction
(2)
(height of the usable
3D Image Field) can be obtained from the
*_ReadMe.txt
file supplied with the
3D correction file
as well as from the user manual
of t
he 3-axis scan system/varioSCAN (“Technical
Specifications” chapter).
• If a z axis is to be used to hold the laser focus only
in a certain plane (especially in 3D systems
without a lens), then even 2D vector commands
can be used. 2D vector commands leave the
z position previously set with a 3D vector
command unchanged and only adjust the focus
length.
• If the Option “3D”, page 38 is not enabled or no
3D correction table has been assigned:
– The split-up into Microsteps is calculated
including the z axis (which influences the
effective jump speed and mark speed in the
xy plane.
– There is merely no output for the z axis
(1) Line “Max. Field Size (z=0): nnn.nnn mm“.
(2) Line “Max. Z-Range: +/- nn.n mm”.
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