Overview

For the visualization of movements, the positions can be recorded and visualized via different interfaces.

Normally the axis position are reported in the display data. For the visualization of the contour the cyclic sampling of the positions is not sufficient. Real corners of the contour also in the visualization should be recognizable as corners. Even if the visualization is running much faster than the normal execution and only a low amount of sample points are reported the corners shall be displayed correct.

Different operation modes of contour visualization

rapid contour visualization without real axis movement

If the control is working in simulation mode the execution of the CNC-program is done rapidly. The contour is sampled and the coarse points are reported for visualization. The actual corners are also reported.

The amount of sample points is decreased considerably.

The real axis are not moved.

Online contour
visualization

The control is working in standard execution mode, where the normal program execution is not influenced.

Additionally axis position are reported via the interface to the contour visualization, if it is required.

Scene

The kinematic chain is defined in the CNC program. At any coordinate system of the kinematic chain (LINKPOINT) one of many graphical objects can be placed. The movements of the coordinate systems are reported through an interface. The movements of the graphical objects can be visualized by kernelCAM and the movement track of the objects can be recorded.

	Functionality scene is not available under TwinCAT.

Execution mode	Data reduction before interpolation	Data reduction after interpolation	Coordinate system	Particularity	Viewer
Dry run	- none -	- none -	PCS	Without real axis movement, normal program execution
Rapid contour visualization	Geometric grid, abs./rel. secant error	Geometric grid, abs./rel. secant error	PCS / ACS by channel parameter	Without real axis movement, rapid program execution	kernelCAM in preparation
Online contour visualization	- none -	Geometric grid, abs./rel. secant error	PCS / ACS by channel parameter		kernelCAM in preparation
Scene	- none -	Time sampling in frames per second	W0 Each coordinate sytem of the kinematic chain, also TCP	For any serial kinematic available. Kinematic chain must be defined in the NC-Program	kernelCAM as virtual CAM (vCAM)

Coordinate systems

The interfaces provide movements in different coordinate systems. Following definition of coordinate systems is used:


ACS	Axis coordinate system
W0	Base workpiece coordinate system, kartesian base coordinate system of machine, corresponding to work piece clamp position
PCS	Programming coordinate system