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Chapter 5: MEI Software
Item Description
Status
Displays the current condition of an axis in hex.
In Sequence?
Displays "Yes" if a set of frames describing a move is executing.
In Motion?
Displays "Yes" if command velocity is non-zero.
In Position?
Displays "Yes" if the position is within the in-position window.
Negative Direction?
Displays "Yes" if the command velocity is negative.
Frames Left?
Displays "Yes" if additional, unexecuted frames are still in buffer.
Axis Done?
Displays "Yes" if In Motion? is "No" and In Position? is "Yes".
Source
Displays the source of a current event (host CPU, position limit, etc.).
State
Displays current event on an axis (Running, E-Stop, etc.).
The buttons on the right of the window perform the following functions:
Button Description
Clear
Reset all flags, clear stops and E-stops.
Idle
Set analog and step/direction outputs to zero, disables amp enable output and disables
PID filter.
Run
Closes the loop, enables PID filter. Note that loop is closed internally (on- board) for
open-loop steps when Run mode is selected. Amp enable must be manually enabled.
Stop
Decelerate at Stop rate.
E-Stop
Decelerate at E-Stop rate.
Dedicated I/O Window
The dedicated I/O displays the status of the dedicated inputs for limits, home, device fault and in-
position. The window also contains buttons to set the amp enable output to a high or low state.
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