The Command-Manager has three selection-boxes.

Click a Joint (Slide-Joint or Pin-Joint)

Click a solved Line or Point

Click an unsolved Line or Point

if is a Pin-Joint, then are Lines

if is a Slide-Joint, then are Points

is a Line or a Point in a Part that is kinematically-defined

is a Line or a Point in Part that is free

Prepare the model with these elements.

Note: The kinematic state of each element is before you add a Motion-Dimension FB.

Preparation (typical):

STEP 1: Start the Command

The Command-Manager indicates that there are three elements to select:

STEP 2: Select the three elements in the graphics-area

STEP 3: Complete the Command

Result : a Rocker

Note: There are two different mouse-actions to move the FB or to move the Dimension

Kinematics-Tree for a Rocker

When we add a Motion-Dimension FB to a Pin-Joint, we identify it as a Rocker in the Kinematics-Tree.

The kinematic elements are:

Part + Pin-Joint + Motion-Dimension = Rocker

Prepare the model with these elements.

Note the kinematic state of each element before you add the Motion-Dimension FB.

* Line or CAD-Line

Preparation example:

STEP 1: Start the Command

The Command-Manager indicates that there are three elements to select.

STEP 2: Select three elements in the graphics-area

STEP 3: Complete the Command

Result : a Slider

Note: There are two different mouse-actions to move the FB or to move the Dimension.

Kinematics-Tree

When we add a Motion-Dimension FB to a Slide-Joint, we identify it as a Slider in the Kinematics-Tree.

The kinematic elements are:

Part + Slide-Joint + Motion-Dimension = Slider

After you add the Motion-Dimension FB, you can open the Motion-Dimension dialog.

To edit the Motion-Dimension FB:

1.Double-click the Motion-Dimension FB in the graphics-area

The Motion-Dimension dialog is open.

2.Edit the:

oBase-Value

or

oBase-Value + Motion Value

The Base-Value is the position of the Motion-Part (Rocker or Slider) when the a wire is not connected to the input-connector of the Motion-Dimension FB, or the motion-value at the input-connector is zero.

Directions separator:

•Edit the positive/negative directions of the Base-Value

•Edit the positive/negative directions of the Motion-Values.

1.Add two Linear-Motion FBs to the graphics-area.

2.Add a Graph FB to the graphics-area

3.Connect a wire from the Linear-Motion FB(1) to the X-axis input of the Graph FB

4.Edit the Base-Part and add a Line

5.Add a Part.

6.Add a Pin-Joint to join the start-Point of the Part to the start-Point of the Line in the Base-Part.

7.Add a Motion-Dimension FB to identify the Part as a Rocker.

8.Connect the other Linear-Motion FB(2) to the Motion-Dimension FB, and from the Motion-Dimension FB to the Y1 input of the Graph FB.

9.Double-click Linear-Motion FB(2) ; edit the Start-Value to 30

10.Double-click Motion-Dimension FB ; edit the Base-Value to 110

11.Double-click Graph FB to show the plot.

In the image, the Master-Machine-Angle (MMA) is 120º.

Thus, the output from the Linear-Motion FB and input to the Motion-Dimension FB is 120º + 30º = 150º.

The Base-Value of the Motion-Dimension is 110º.

The angle of the Rocker is Base-Value + Motion-Value = 110º + 150º = 260º.

The output from the Motion-Dimension FB is the input to the Graph FB.

When you open the Graph FB, the vertical cursor is at the MMA.

If you set the cursor to 120º, the Y-axis value is 260º.

The graph is a plot of the output of the Motion-Dimension FB (Y-axis) against the MMA (X-axis)