- NI-Motion User Manual

Chapter 4 What You Need to Know about Moves

• Contoured Move—Is a user-defined move; you generate the

trajectory, and the points loaded into the motion controller are splined

to create a smooth profile

The motion controller uses the specified move constraints, along with the

move data, such as end position or radius and travel angle, to create a

motion profile in all the moves except the contoured moves. Contoured

moves ignore the move constraints and follow the points you have defined.

Coordinate Space

With the exception of the arc move, you can execute all basic moves on

either a single axis or on a coordinate space. A coordinate space is a logical

grouping of axes, such as the XYZ axis shown in Figure 4-3. Arc moves

always execute on a coordinate space.

If you are performing a move that uses more than one axis, you must

specify a coordinate space made up of the axes the move will use, as shown

in Figure 4-3.

Figure 4-3. 3D Coordinate Space

Use the Configure Vector Space function to configure a coordinate space.

This function creates a logical mapping of axes and treats the axes as part

of a coordinate space.The function then executes the move generated by the

trajectory generator on the vector, and treats all the move constraints as

vector values.

Multi-Starts versus Coordinate Spaces

Coordinate spaces always start and end the motion of all axes

simultaneously. You can use multi-starts to create a similar effect without

X, Y, Z