MechDesigner Reference & User Interface > Dialog-Boxes > Dialog: Function-Block: Motion-Dimension

Motion-Dimension FB

A Motion-Dimension FB

•identifies a Part (Motion-Part) you want to move with motion-values.

•specifies its starting-position

•specifies its positive direction for increasing motion-values

When a Motion-Dimension FB specifies the:

Angular Position of Part, it is a Rocker
	<< the Motion-Dimension FB in the graphic-area for a Rocker.

When a Motion-Dimension FB specifies the:

Linear Position of a Part, it is a Slider
	<< the Motion-Dimension FB in the graphic-area for a Slider.

Edit the Motion-Dimension FB:

1.Double-click the Motion-Dimension FB in the graphic-area or Assembly-Tree

- or -

The Motion-Dimension dialog-box is now open.

Motion-Dimension dialog-box

The Motion-Dimension FB function is:

Output = Input + Base-Value

Dialog-13.2-Motion-DimensionFB

Base-Value:

The constant contribution to the Motion-Dimension

Motion-Value: (read-only)

The motion contribution to the Motion-Dimension at the input-connector to the Motion-Dimension FB.

Base-Value + Motion-Value

∑ Base-Value + Motion-Value = Motion-Dimension

Note: Units are determined by the data-type at the input-connector

Directions

Note: I generally do not use Directions - I prefer to arrange the model so that I can predict the positive directions of Motion-Parts.

Negate Motion-Values:

◉ Positive Motion-Values : Motion-Value × 1 (default)

◉ Negative Motion-Values : Motion-Value × –1

Negate Base-Values

◉ Positive Base-Value : Base-Value × 1 ( default )

◉ Negative Base-Value - Base-Value × –1

Notes:

The Positive direction of a Motion-Dimension:

Rocker - counter-clockwise angle

Slider - direction of arrowhead on Slide-Joint - See Positive Direction of Sliders