Scanlab RTC6 PCIe Board - Page 983

RTC6 boards
Doc. Rev. 1.0.21 en-US
20 Appendix E: iDRIVE Scan Systems – Control Commands and Signals Transmitted to RTC Boards
983
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• On SetPositionScale
– If the scaling factor for scaling the position
values is changed, then the user program
calibration factor for calculating RTC6 control
values (in bits) from the desired Image Field
position values (in mm), see Chapter 7.3.2
”Image Field Size and Image Field Calibration”,
page 167, needs to be subjected to an inverse
proportional scaling. In addition, the
jump speed and mark speed should be
adjusted.
– The currently set scaling factor can be queried
with Data = 053F
H
.
• On SetPosAcknowledgeLevel
– The limit value must be specified related to a
16-bit position range.
– The default start behavior is for the scan system
to set the limit value to 0.28% of the full
angular range of an axis (LSB16 or 1/65536,
Code
LOW
= 183 = B7
H
) after every power-up
or reset.
If other limit values are desired, they must be
separately set for each axis (Code
HIGH
= 15
H
).
SCANLAB recommends setting only limit values
(Code
LOW
) > 14
H
(that is, 0.03% of the full
position range). Lower values can lead to
frequent system safety shutdowns due to
Position Acknowledge time outs (set position
not reached for an excessive time).
• On Store/RestoreTransmissionMode
– control_command ( Data = 1700
H
) has no effect
if a power-up or reset was executed after the
most recent execution of control_command ( Data
= 17FF
H
).