Limits, Marker, And Machine Direction; Figure 3-3: Machine Direction - Aerotech PRO165SLE Hardware Manual

Hardware Manual

3.4. Limits, Marker, and Machine Direction

Aerotech stages have both a positive and negative Machine Direction and a positive and negative
Programming Direction.
Machine Direction: The machine direction is defined by how the encoder and motor are
mounted and the electrical wiring connections in the stage.
Programming Direction: Your system controller defines the programming direction of the stage
and is application specific. A positive programmed move may or may not agree with the machine
positive direction. Refer to your programming help documentation for more information.
The home marker is located near the center of travel on stages with a linear encoder (SLE models).
For stages without the linear encoder option (SL models), the marker is located in the rotary motor
and will be triggered near the designated home limit.
Figure 3-3: Machine Direction
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