Instruction manual

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Meanwhile, the RFCP has told the controller to consider that it will take some number (e.g., four)
microsteps to make one step or count that the RFCP will consider. Thus, the RFCP command to move 123
steps will make the motor move 123x4=492 microsteps. The controller counts these steps, and after 492
microsteps will send the current position back to the RFCP for display. Note you can change the speed of
the motor by changing the “pause/microstep” setting.
In general, data concerning the RoboFocus settings resides in the controller in nonvolatile memory. Thus,
the RFCP normally only knows what it can find out from the controller. RFCP does not poll the controller
on a regular basis—only when the refresh is pushed or a command is issued, or if it receives indications
that a manual move has occurred..
Changes in RoboFocus V3.
In V3 software (PC) and firmware (control processor) we have made the changes below. V2 and V3
software can be used with either V2 or V3 firmware (with some functionality limits).
• Added temperature compensation with a sensor in the controller and appropriate software changes
• Added a stepsize function to the controller to allow finer and coarser steps
• Added a configuration command to allow remote setting of duty, speed (delay), and stepsize
• Fixed minor bugs in firmware that sometimes could allow a microstep drift in position (unreported) or
one step error in movement (correctly reported). Deleted separate Backlash=0 setting.
• Rearranged screens, repaired minor software bugs, improved ASCOM interface
Changes in RoboFocus V3.21 Software
• Ability to change temperature scale between raw units, F, and C, and to calibrate temperature
• Ability to operate with a manually entered temperature coefficient (new Relative Specified Mode).
This makes it very easy to share temperature coefficient results with other users without having to
share specific datasets. We have also improved the menu options for temperature compensation mode
choices
• Display of temperature on main screen (updated automatically)
• Assorted minor bug fixes
Changes in RoboFocus V3.22 Software
• Correction of Slope Raw to Centigrade conversion algorithm.
• Synchronization of Absolute/Relative values to appropriate mode.
• Added temperature update when Refresh is pressed.
• Decoupled Slope computation from temperature compensation logic.
• Layout changes to Main and AbsRel Screens
• Assorted minor bug fixes
Changes in Controller from Model 3 to Model 3.1
• Minor layout changes
• Moved temperature sensor to underside of board (to reduce temperature effect from stepper driver)
• Converted from transistors to x4 drive chips for stepper and for remote power module (easier
servicing)