RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
298
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Ctrl Command home_position
Function
activates the home jump mode (for the X and Y axes) and defines the home position
Call
home_position( XHome, YHome )
Parameters
XHome,
YHome
absolute coordinates of the home position in
bits
as signed 32-bit values.
Allowed range: [–524288…524287]. Larger values will be clipped.
Comments
• This command defines the coordinates of a home jump to be executed, for example,
upon reaching the end of a list. Analogously, a list will start with a home return to the
most recently valid position. Home jump and home return are executed at jump speed.
• 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
).
• This command is intended for a laser system that does not allow fast switching of the
laser. After calling the command, the laser focus moves to the specified home position
whenever no list is executing or when a list has been paused via
. A home jump
is also executed, if list execution is stopped via
or via an external stop
signal. The home jump itself (in contrary to a home return) cannot be stopped.
• While a home jump or a home return is executed, the INTERNAL-BUSY status is set.
• A
beam dump
should be placed in the home position.
• The home jump mode is deactivated with the command
home_position(0, 0)
, even if
RTC
®
4
RTC
®
5 unchanged functionality (except for the extended range of values).
The image field coordinates for the X and Y axes are specified as 20-bit values; in RTC
®
4
compatibility mode they are specified as 16-bit values (as with the RTC
®
4) and the RTC
®
5
multiplies the specified coordinate values for the home position by 16 (the permissible
range of values is correspondingly reduced to [–32768 … 32767]).
References
