RTC6 boards
Doc. Rev. 1.0.21 en-US
8 Advanced Functions for Scan Head Control and Laser Control
237
8.5.2 3D Scan Systems
An RTC6 PCIe Board can also be used to control a 3-
axis scan system
(1)
. This requires the Option “3D”,
page 38.
Intended Use
3-axis scan systems can be used for positioning the
laser focus within a flat processing field without the
need for a flat field objective. Therefore, they are
frequently used in applications for which flat field
objectives are not available.
3-axis scan systems can also be used as 3D beam
deflection systems. Here, the laser focus is guided
along the contour of the workpiece being processed,
thus enabling workpiece processing in 3 dimensions.
SCANLAB offers dynamic focusing units
(2)
that
extend xy scan systems to 3-axis scan systems.
Connection and Initialization
In order to control a 3-axis scan system by an
RTC6 PCIe Board:
• The Option “3D”, page 38 of the RTC6 PCIe Board
must be enabled (this can be checked by
get_rtc_version)
• The xy scan system must be connected to the first
scan head connector
• The z axis must be connected to the second
scan head connector
• A 3D correction table (
D3_*.CT5
) must exclusively
be assigned to the first scan head connector (by
select_cor_table or select_cor_table_list).
• If, in addition, the Option “Second Scan Head
Control”, page 38, is enabled, it is alternatively
possible to connect:
– the xy scan head to the second scan head
connector
– the z axis to the first scan head connector
– In this constellation the 3D correction table
must be assigned to the second scan head
connector.
See also Chapter 4.5 ”Interfaces to Scan System”,
page 67 and Section ”2D and 3D Correction Files”,
page 174.
Other than that, no additional drivers or software
files are needed for controlling a 3-axis scan system.
Even initialization and program launching remain
unchanged, see Chapter 6.2 ”Initialization and
Program Start-Up”, page 95.
Several 3-axis scan systems can be simultaneously
controlled (by multi-board commands) from a single
PC. This requires a corresponding number of
RTC6 PCIe Boards with enabled Option “3D”s to be
installed in that PC.
(1) Consisting of an xy scan system and a z axis dynamic
focusing unit (see footnote 2) as z axis.
(2) See Glossary entry on page 26.
Notice!
• The standard RTC6 DLL (
RTC6DLL.dll
) supports
all RTC6 commands for controlling 3-axis
scan systems.
However, the full functionality of the
RTC6 commands – the actual output of
z coordinates – is only available with enabled
Option “3D”, page 38.
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