The relation between two values can be displayed graphically with a X-Y pair by controlling the X and Y position of a point with 2 signals. Furthermore, a defined number of previous X-Y values can be displayed. It is possible to draw Lissajous figures or to create the so-called trailing actions.

The X and Y coordinate of the point refer to a base and value axis. Besides the color, the dot size defines the presentation of the point. The track width determines the size of the previous points. You determine via “Tracked values” how many previous points are displayed.

The sampling method determines the time interval for the signal sampling. You can either specify a fixed time interval in ms (every x ms) or adjust the signal sampling (every sampling).

The display of the point can always be enabled or controlled by a digital signal. As long as the digital signal is TRUE, new points will be drawn. If the digital signal is FALSE, the point remains at its last position until the signal has been enabled again.

If the signal is active again, a line is always drawn from the last point before deactivation to the new first point after the signal was reactivated. In trajectory mode, this connection line is not drawn.

The display can be deleted again with a reset signal.

Example: