RTC
®
5 PC Interface Board
Rev. 1.9 e
10 Commands And Functions
252
Comments Comments regarding the SetMode command (Code
H
= 05
H
):
• Set (angular) position values returned by the scan system correspond to the effective output
values
Sample<AX..BY>_Out
with set_trigger/set_trigger4 and take into account any defined
wobbel and Processing-on-the-fly corrections, coordinate transformations, image field correc-
tion as well as offset and gain compensations for automatic self-calibration of the scan system.
Additionally, the 20-bit set position values returned from a Z axis (and in RTC
®
4 compatibility
mode from the X and Y axes, too) are scaled by a factor 16 relating to the therefore specified
16-bit coordinate values.
• During a temporary error state after the maximum allowed temperature was exceeded (flag
bit#7 = 0), the scan head’s output stages of the affected axis are at least temporarily deacti-
vated. The scan system will return to normal operation as soon as the temperature drops again
below the maximum allowed temperature.
• If a critical error occurs (flag bit#9 = 0), the scan system automatically enters a permanent
error state, in which the output stages of the affected axis remain deactivated – even if the crit-
ical error was only temporarily present. Normal operation is not resumed. Flag bit#9 is only
reset via a hardware reset. Critical errors are for instance improper internal voltages (flag
bit#13 = 0), external power supply interruption (flag bit#8 = 0) or reaching a critical edge
position (flag bit#5 = 0).
• During both temporary and permanent error states, the scan system continues to transmit data
to the control board. Even in these states, switching or selection of data signals for diagnostic
purposes is still possible.
• The flags indicate the scan system’s operational state. The scan module can return one of two
flag blocks indicating the current operational state (
Data
= 0528
H
, 0529
H
) or alternatively one
of two further flag blocks indicating the operational state at the moment of the most recently
occurred operation interruption (
Data
= 052B
H
, 052C
H
). After every successful restart – and, as
long as no error has occurred – all status information of the two latter blocks (
Data
= 052B
H
,
052C
H
) are irrelevant. Only, as soon as an error causes a switch into a temporary or permanent
error state, the current status values will be saved into these two blocks. In this case, also an
event code is simultaneously set, indicating which particular event caused the error state. This
event code can be read out separately (
Data
= 052A
H
).
• The angle bit-values (actual position, set position, position error) or angle bit/ms-values (actual
speed) returned to the RTC
®
5 can be converted into °-values or °/ms-values via the scan
system’s calibration angle. The calibration angle can be read out via
Data
= 0523
H
.
• Exact values for the internal voltages referred to in the table can vary for different versions of
the scan system.
•intelliWELD
®
scan systems can be supplied with various number of sensors. Reference the scan
system’s user manual. This RTC
®
5 manual lists the command codes for all its theoretically
possible sensors.
Ctrl Command control_command
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