Scanlab RTC 5 PC Interface Board, Installation And Operation Manual

Page: 482 / 622

RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
482
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Comments • For information on Sky Writing mode and a description of the parameters, see "Sky
Writing", page 113 .
• If
Nprev

65535, then set_sky_writing_para behaves similarly to set_sky_writing :
Nprev
is set to a value of approx. (0.15 ·
Timelag
), i.e.
– run-in duration / µ s = approx. 3 ·
Timelag
(mode 1)
– run-in duration / µ s = approx. 1.5 ·
Timelag
(mode 2 or 3)
Here,
Nprev
gets clipped to the maximum value of 65535 if necessary.
• If
Npost

65535, then set_sky_writing_para behaves similarly to set_sky_writing :
Npost
is set to a value of approx. (0.1 ·
Timelag
), i.e.
– run-out duration / µ s = approx. 2 ·
Timelag
(mode 1)
– run-out duration / µ s = approx. 1 ·
Timelag
(mode 2 or 3)
Here,
Npost
gets clipped to the maximum value of 65535 if necessary.
• set_sky_writing_para cannot be used to switch back and forth between Sky Writing
modes 1, 2 and 3 (the proper command for this is set_sky_writing_mode ).
• If you call set_sky_writing_para (
Timelag

1/64) while Sky Writing is deactivated,
then Sky Writing mode 1 will get activated. If the command call succeeds during execu-
tion of a list, then mode 1 will only become active as of the next list command (an
already-begun mark or arc command will still execute to completion
without Sky
Writing).
• If you call set_sky_writing_para while Sky Writing mode 1 is activated, then the
supplied parameters become active as of the next list command. If the command call
succeeds during execution of a list, then:
– If (
Timelag

1/64), then Sky Writing for an already begun mark or arc command will
execute to completion still using the existing parameters
– If (
Timelag
< 1/64), then a mark or arc command already begun in Sky Writing
mode 1 will still complete in Sky Writing mode 1 and then be appended with a mark
delay.
• When you call set_sky_writing_para while both Sky Writing mode 2 or 3 is activated
and the board’s BUSY status is currently set (list is being processed or has been halted
via
pause_list ), then the command will be ignored ( get_last_error return code :
RTC5_BUSY
). In contrast, the command executes when no list is currently running or
when a list has been paused via set_wait .
– If
Timelag
< 1/64, then Sky Writing mode 2 or 3 will be deactivated.
– If
Timelag

1/64, then the supplied parameters become effective as of the next list
command. For Sky Writing mode 2 or 3, however,
Nprev
= 0 and/or
Npost
= 0 will
automatically get internally corrected to 1 (this is not treated as an error). If you sub-
sequently activate Sky Writing mode 1 (via
set_sky_writing_mode ), then
Nprev
= 0
and/or
Npost
= 0 will be reused.
RTC
®
4

RTC
®
5 new command
Version info Last change with version DLL 537, OUT 537:
Timelag
References set_sky_writing , set_sky_writing_para_list
Ctrl Command set_sky_writing_para