Dialog: Function-Block: Motion

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Dialog: Function-Block: Motion

Motion FB

see Add Motion FB

A Motion FB provides a link to a Motion and Motion name-tab in MotionDesigner.

How to open the Motion FB dialog-box

MD-Icon-FB-Motion

Edit the Motion FB:

1.Double-click a Motion FB in the graphic-area

- or -

1.See How to Open a Dialog-Box

The Motion FB dialog-box is now open.

Motion FB dialog-box

MD-DIALOG-FB-MOTION
tog_minus Motion Parameters   
MD-DIALOG-FB-MOTION-MOTIONPARAMS

Select Motion:

Click the drop-down box to select a motion.

The default link is to the leftmost Motion name-tab and Motion.

After each Motion Cycle:

A Motion-Cycle is one revolution of the Master-Machine Angle as it increases from 0 to 360.

After each Motion Cycle, you can:

◉ Reset Output: (default)

Start-Position (Machine-Cycle N) = Start-Position (Machine-Cycle 1)

◉ Accumulate Output:

Start-Position (Machine-Cycle N) = End-Position (Machine-Cycle N-1)

Output Data-Type:

◉ Motion : (default, for Rockers and Sliders)

◉ Linear *

◉ Rotary *

*  You must select Linear or Rotary if you connect a wire from a Motion FB to a Motion-Path or a Math FB.

Notes :

Usually, the motion-values at the input to a Motion FB increase at a constant rate from 0 to 360, again and again.

However, the motion-values at the input to the Motion FB can fluctuate in any way.

For example, the input can be from a Motion FB, a Point-Data FB, or a Measurement FB.
tog_minus Pattern  

Ignore this separator
tog_minus Query  
MD-DIALOG-FB-MOTION-QUERY

Enter a Y-axis value

The values in the box (below) are the X-axis values that relate to the Y-axis value for the Selected Motion - see Motion Parameters

Reset or Accumulate after each Motion-Cycle?

This is best explained with an example.

Design an Indexing Motion in MotionDesigner with two Segments::

Segment 1: Index (X-axis: 0-240; Y-axis: 0-90)

Segment 2: Dwell (X-axis: 240-360, Y-axis: 90).

Connect a Linear-Motion FB to a Gearing FB. Connect the Gearing FB to a Motion FB. Connect the Motion FB to a Motion-Dimension FB which controls an indexing-shaft.

Edit the Motion FB.

Select the Indexing Motion you have designed.

Edit the Gearing FB.

Edit the Gearing Ratio. Enter 4

As the MMA increases from 0 to 360, the output from the Gearing FB increases from 0 to Gearing Ratio × 360. That is, it increases from 0 to 1440.

If you Reset Output: (after each Motion Cycle)

The indexing-shaft jumps to its start position each time the input to the Motion FB reaches an integer multiple of 360.

The indexing-shaft will jump back 4 times as the input increases from 0 to 1440.

If you Accumulate Output:  (after each Motion Cycle)

The indexing-shaft will index progressively forward each time the input to the Motion FB increases by 360  

The indexing-shaft will index 4 times, to make one complete revolution, as the input increases from 0 to 1440.