(from MP-285 MICROMANIPULATOR SYSTEM REFERENCE MANUAL – REV. 3.13 (20080229))

To set a New Home position

  1. While in the movement screen, move to the location you wish to establish as HOME
  2. Press <*> to enter the robotics menu
  3. <TAB> to “New Home” and press <ENTR>. You will see the following screen:

Accept new home spd = 2000 μm/s (TAB to edit) res = .20 μm/Step

At this point, you can just press <ENTR> to accept or have the option of setting both the speed and the resolution that will be used during the robotic move to the Home location.

To toggle between low and high resolutions

  1. <TAB> 2X to “res” and press <ENTR>.
  2. The screen above will change and read “—TAB to toggle—“ in the lower left corner
  3. Following the direction, press <TAB> to change the resolution from what ever is currently displayed to the other resolution. You will be warned that the change in resolution automatically changed the speed.

To change the speed

  1. <TAB> to “spd” and press <ENTR>
  2. Use the number keys on the keypad to enter the desired speed in μm/s
  3. Press <ENTR> to accept the new speed or <ESC> to abort the edit.

A few words on setting the speed and resolution of the home move:

  • Changing the resolution of the move automatically makes a change in the speed that is calculated and displayed by the controller. For this reason, it makes the most sense to change resolution first and then set speed.
  • Because the controller commands the manipulator in μsteps/s, and because there is a finite rate to the number of μsteps that can be issued, you will not be able to reach as fast speeds in high resolution. Therefore, if you desire the highest speed of movement it must be made at low (.20μm/μstep) resolution.
  • In most applications, the resolution of robotic moves will have little consequence to the user. You may notice that moves at higher resolution are slightly smoother, however if you make a low and high resolution move at the same final speed you will probably find the differences very slight.
  • The maximal speeds that can be commanded at both resolutions are 1330μm/s at 0.04μm/μstep and 6550μm/s at 0.20μm/μstep.

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