Step 2.2A Edit the Motion-Dimension FB

<< Click to Display Table of Contents >>

Navigation:  Getting Started Tutorials - MechDesigner > Tutorial 2A: Four-bar Kinematic-Chains >

Step 2.2A Edit the Motion-Dimension FB

The Motion-Dimension FB

The Motion-Dimension dialog-box controls the Base-Value of a Motion-Part.

The motion-value at its input-connector controls the position and motion of the Motion-Part relative to the Base-Value

Thus, when the Motion-Dimension FB does not have a wire at its input-connector, the position of the Motion-Part is specified by the Base-Value parameter.

Video of this Step


Tutorial 2: STEP 2.2A

Edit Motion-Dimension FB


Edit the Motion-Dimension FB


Open the Motion-Dimension FB dialog-box.

To edit this element from the graphic-area, you can:

1.Double-click the dimension arrowhead


1.Double-click the FB


See How to open a dialog-box, to edit an element

Note: There are two different mouse-actions to move the Motion-Dimension (with arrow-head and position value) and the Motion-Dimension FB.

To move the Function-Block :


To move the Motion-Dimension :

CTRL + Hover(FB) + DRAG

Hover(FB)= move your mouse above the FB icon.

DRAG = Mouse-Button-Down, move your mouse-pointer, Mouse-Button-Up


Motion-Dimension dialog-box

Parameters to edit:

Base-Value : The position of the Motion-Part when a wire is not connected to the input-connector.

Base-Value + Motion-Value : This value is the output from the FB to the Motion-Dimension, but actually edits the Base-Value.

Edit the Base-Value to 60

If necessary - see : How to edit parameters in a data-box.

1.Spin-Box tool: Click the bottom, left & right arrows, at the right of the data-box, to make sure the Spin-Increment = 10.

2.Right-click the Base-Value data-box

The Zero / Round contextual-menu shows next to your pointer.

3.Click Round.

The dimension rounds up or down to the nearest number that is exactly divisible by the Spin-Increment.

In the example to the left, the Base-Value dimension is 47.827°. The dimension will round up to 50°.

4.Click the top, right arrows, at the right of the data-box, to increase Base-Values to 60°.

See also How to edit Parameters in a dialog-box