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Software Actions

Action

Notes

1

Home

Each motor will need a home command, where the actuator is retracted until a limit switch is hit.

2

Move to a position

Position given by number of steps away from home.

3

Two modes: automatic and manual

Automatic mode: Dispatcher reacts to any of the following:

  • Octagon Source Change

  • ND1 Filter Wheel Filter Change

  • ND2 Filter Wheel Filter Change

The dispatcher will then move all 4 compensator mirrors to the correct positions for the new source and filter wheel settings.

Manual mode: the dispatcher does not react to changes of the sources or filter wheels.

4

Error catching

Motors can never be commanded beyond XXXXX steps as it will cause the actuator to damage itself by extending too far.

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Required Adjustable Settings

Setting

When Needed

Notes

Build

Observing

Maintenance

Look up table of positions

YES

NO

YES

Table contains a set of 4 motor positions for each combination of:

  • octagon source

  • ND1 filter wheel position

  • ND2 filter wheel position

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Required Telemetry

Parameter

Report Frequency

Purpose

Notes

1

2

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