Homing Motors - THORLABS KBD101 User Manual

Chapter 5

5.4 Homing Motors

The need for homing comes from the fact that on power up the motor (stage) is at a
random position, so the value of the position counter is meaningless. Homing involves
moving the motor to a known reference marker and resetting the position counter to
the associated absolute value. This reference marker can be one of the limit switches
or can be provided by some other signal. The DDSM series stages use an electronic
reference marker and therefore the limit switches are not used for reference.
1) Click the 'Home' button. Notice that the 'Not Homed' LED changes to 'Homed',
and that the LED flashes to indicate that homing is in progress. The displayed
position counts down to 0, i.e the home position.
2) When homing is complete, the 'Homed' LED is lit.
If a move is demanded on a particular axis, before the axis has been
'Homed' then a Windows 'Event Information' panel is displayed, telling
the user that the axis must be homed before operation.
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Fig. 5.2 Motor Controller Software GUI
Note
HA0364T Rev Ck Jan 2017