RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
237
the following values are only returned after
Command
= 4:
100 for both axes: a sensor system of type1 is included and is functioning
200 for both axes: a sensor system of type2 is included and is functioning
19 X axis (galvanometer scanner 2): a sensor system of type1 is included and is functioning
Y axis (galvanometer scanner 1): sensor system is defective
29 X axis (galvanometer scanner 2): a sensor system of type2 is included and is functioning
Y axis (galvanometer scanner 1): sensor system is defective
91 X axis (galvanometer scanner 2): sensor system is defective
Y axis (galvanometer scanner 1): a sensor system of type1 is included and is functioning
92 X axis (galvanometer scanner 2): sensor system is defective
Y axis (galvanometer scanner 1): a sensor system of type2 is included and is functioning
99 for both axes: sensor system is defective
255 for both axes: there is no sensor system included in the scan system
Comments • For information on using the command, see "Automatic Self-Calibration", page 199.
• At the end of this command’s execution, the RTC
®
5 always moves the galvanometer
scanners back to the position held prior to the call, possibly with corrections attribut-
able to changed gain and offset values.
• During determination of the current Home-In positions with auto_cal(
Command
= 0, 1
or 3), the current gain and offset corrections of the galvanometer scanners are not
taken into account; neither are any head corrections or the current positions of the
scanners.
• After first-time or renewed connecting a scan system, a reference value determination
should be performed via auto_cal(
Command
= 0). Otherwise, the RTC
®
5 will use the
stored reference values of a previously operated (possibly different) scan system when
later performing an automatic self-calibration.
• After initialization of the RTC
®
5, or after a reset, drift compensation is turned off (gain
= 1.0, offset = 0). However, previously determined reference values are still available.
• If no appropriate Home-In reference values were stored or the scan system is not
equipped with Home-In sensors, then the measurement routine for auto_cal(
Command
= 1) (axis-specific) will automatically abort and restore the prior state.
• If the values for
HeadNo
or
Command
are invalid, then auto_cal will not be executed
(return value 6, get_last_error return code:
RTC5_PARAM_ERROR
). This also applies for
HeadNo
= 2 if the “second scan head control” option has not been enabled (return value
6).
•The auto_cal command will likewise not be executed (return value 3, get_last_error
return code:
RTC5_BUSY
) if the board’s BUSY status is currently set (list is being proc-
essed or has been halted via pause_list) or the board’s INTERNAL-BUSY status is
currently set. In contrast, the command is executed when a list has been paused via
set_wait (PAUSED status set). For
RTC5_PARAM_ERROR
, the BUSY status is not checked;
therefore return codes
RTC5_BUSY
and
RTC5_PARAM_ERROR
will not arrive simulta-
neously.
•For
Command
= 0, 1 or 2, a valid correction table must be loaded and assigned. Other-
wise, unexpected jumps can occur when gain/offset values are updated.
• Gain and offset correction can also be directly set via set_hi (even for systems without
Home-In sensors).
• Reference values determined and stored via auto_cal(
Command
= 0, 1 or 3) can be
queried via get_hi_pos.
Ctrl Command auto_cal
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