Scanlab RTC6 PCIe Board - Page 334

RTC6 boards
Doc. Rev. 1.0.21 en-US
10 RTC6 Commands
334
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Comments
(cont’d)
• After initialization of the RTC6, 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) automatically aborts and restores the prior state.
• auto_cal is not executed, if a HeadNo or Command value is invalid
(return value 6, get_last_error return code RTC6_PARAM_ERROR ). This also applies for
HeadNo = 2 if the Option “Second Scan Head Control” is not enabled (return value 6).
• auto_cal is not executed (return value 3, get_last_error return code RTC6_BUSY ), if:
– the BUSY list execution status is set
– the INTERNAL-BUSY list execution status is set
• auto_cal is even executed, if:
– a list has been paused by set_wait (PAUSED list execution status set)
• For RTC6_PARAM_ERROR , the BUSY list execution status is not checked; therefore return
codes RTC6_BUSY and RTC6_PARAM_ERROR do not occur simultaneously.
• For Command = 0, 1 or 2, a valid correction table must be loaded and assigned.
Otherwise, unexpected jumps can occur when gain/offset values are updated.
• Gain and offset correction can also be directly set by set_hi (even for systems without
Home-In sensors).
• Reference values determined and stored by auto_cal( Command = 0, 1 or 3) can be
queried by get_hi_pos.
• ASC hardware checks are performed not just by auto_cal( Command = 4), but also
automatically for
– auto_cal( Command = 0) and
– the first call of auto_cal( Command = 1) and auto_cal( Command = 3) if neither
auto_cal( Command = 0) nor auto_cal( Command = 4) were previously executed.
In each case, the detected ASC hardware type gets stored in the Flash Memory and can
be subsequently queried by get_auto_cal. For automatic Command = 4 execution,
however, no corresponding return value is generated. The return value is instead
simply that of the primary Command call (see above).
When an error occurs, a corresponding error code gets saved to the Flash Memory
(therefore, get_auto_cal does not return 100 or 200). As soon as hardware
functionality is restored, you can clear the error from the Flash Memory by explicitly
calling auto_cal (Command = 0) or auto_cal (Command = 4) . auto_cal (Command = 1 ) and
auto_c
al (Command = 3 ) c
annot be executed as long as the error is still in the Flash
Memory. The error is not cleared by these calls from the Flash Memory.
Ctrl Command auto_cal