9 auto home move mode, Auto home move mode – ADLINK PCI-8144 User Manual
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Operation Theory
4.2.9
Auto Home Move Mode
Depending on the software homing mode design, the PCI-8144
offers an auto homing move function which means the axis will
move to a zero position point on the coordinate. This mode is used
to add an auto home moving function on the normal home return
mode described in the previous section no matter which position
the axis is. The following diagram shows an example for normal
home mode usage for which the start point is between the ORG
and EL signal or exists in the ORG signal. The ORG offset can’t be
zero because the motion ASIC of the PCI-8144 offers a level trig-
ger for the ORG signal. The suggested value is the double length
of the ORG area. A homing status function can be used to monitor
the current status of the homing operation.
Case 1: SD (Slow down)
>
Stop at ORG
Case 2: EL
(End
Limit)
>
SD (Slow down)
>
Stop at ORG
Case 3: Inversed
direction
moving
>
EL (End Limit)
>
Return
>
SD
(Slow down)
>
Stop at ORG
Case 4: Stop
at
ORG
Case 5: SD (Slow down)
>
Stop at ORG
Case 6: EL
(End
Limit)
>
SD (Slow down)
>
Stop at ORG
Case 7: Inversed direction moving
>
EL (End Limit)
>
Return
>
SD
(Slow down)
>
Stop at ORG