Scanlab RTC 5 PC Interface Board Installation And Operation Manual page 508

Undelayed set_wobbel_vector
Short List
Command
Comments • set_wobbel_vector can't be used together with the Softstart function because both
require a shared memory area on the RTC
writing, you absolutely must explicitly deactivate Softstart. Otherwise, the command
will have no effect. set_wobbel_vector itself blocks subsequent memory changes via
set_softstart_level
as the wobbel shape hasn't been explicitly switched off.
• Period = 0 isn't allowed as a shape section. Period = 0 means explicitly switch off the
"freely definable wobbel shape" (not the wobbel mode itself, see set_wobbel_mode).
Subsequent calls of set_wobbel_vector will begin a new wobbel shape.
• Each call of set_wobbel_vector adds a new section at the end of the previous section
independently of when the call is performed.
• Up to 512 wobbel shape sections can be defined. After 512 sections, storage automat-
ically wraps around to the first section and overwrites it. Each further call does the same
to the next section.
• The wobbel shape automatically begins with wobbel vector (0,0), i.e. directly on the
marking itself (the hard jump of "classic" wobbel shapes is eliminated if the longitu-
dinal amplitude
• Each wobbel shape section consists of a vector defined by microsteps and their number.
The parameters dTrans, dLong get internally rounded to 7 bit decimal places. At
runtime each microvector is executed within 10 µs. For large Period values, you should
therefore take rounding error into account. Positive dTrans values cause that in respect
to the direction of movement the start is to the right (which applies to circular wobbel
shapes as well). Positive dLong values cause that in respect to the direction of movement
the start is forward. The last section's endpoint is also the first section's start point.
Independently of its respective position, it always ends at (0,0) and might get executed
as a hard jump. With the last step the laser power is reset to the initial nominal laser
power.
• The summed up wobbel amplitude may never exceed ±(2
• If activated via set_wobbel_control, the RTC
within the wobbel shape section as per P = P0 · (1 + dPower · n / 16384),
whereby 0  n  Period. n represents the current number of each microstep. You can
define the nominal laser power P0 with the list command set_wobbel_control.
• If activated via
power P0 will be multiplicatively varied by the laser power parameter P across multiple
McBSP transfers: P0
• Beware here that for each both corrections a maximum laser power of only P0 · 4.0 is
allowed, whereby the maximum range of the laser control parameter likewise must not
be exceeded (see set_wobbel_control).
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RTC 5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
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or set_softstart_level_list. These commands have no effect as long

0) and also ends there without requiring explicit declaration.
set_multi_mcbsp_in or set_multi_mcbsp_in_list, the nominal laser
= P0 · P / 16384.
McBSP
5. To avoid (unintentional) mutual over-
17
-1).
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5 will vary the current laser power P
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