Object: CNC Settings

Symbol:

The settings in this object are valid for all CNC objects of the application. The object is added to the device tree of the application or it is generated automatically when a CNC object is added to the application. The object may exist only one time per application and cannot be renamed.

In the editor of the object, settings can be specified for the path preprocessing modules, preinterpolation, and CNC tabular editor. You can delete the CNC settings object only if no CNC object exists below the application.

Tip

Settings that are valid only for a specific CNC program are saved in the Settings dialog of the CNC program.

Tab: Path preprocessors

On this tab, the path preprocessing is programmed by selecting the function blocks.

Available function blocks	List of all available function blocks
Active function block instances	List of the selected function block instances The position in the list defines the processing order and can be changed. A function block can be instantiated in the list multiple times.
Parameters	Opens the Parameter editor for <selected active function block instance> dialog Alternative: Double-click an active function block instance
	Adds an instance of the function block to the Active function block instances that is selected in Active function block instances
	Deletes the selected function block instance Function block instances of function blocks, which are displayed in light-gray italics, cannot be deleted.
	Moves the selected active function block instance upwards by one line Alternative: Press Shift+Arrow up
	Moves the selected active function block instance downwards by one line Alternative: Press Shift+Arrow down

Table 61. Parameter editor for <selected active function block instance>Dialog

The dialog is used for displaying and changing the inputs of the selected instance. Not all inputs are visible.
Spalte1	Name of the parameter of the selected active function block instance
Spalte2	List box for setting the value
Spalte3	Description of the parameter

Tab: Preinterpolation

Cycle time µs

Interpolation time

Initial value: 20000

Velocity mode

Trapezoid: Velocity profile with trapezoidal shape
Sigmoidal: Velocity profile like the trapezoidal profile but with sin² functions that replace the linear velocity ramp
Sigmoid limited: Velocity profile like the sigmoidal profile but with consideration of the limits for acceleration and deceleration
Quadratic: Acceleration profile with trapezoidal shape with jerk limitation as defined in Maximum jerk. The resulting quadratic velocity profile is also recognized as an S curve.
Quadratic (smooth): Works like Quadratic mode but generates a jerk profile without jumps.

Maximum jerk [u/s³]

Limitation of the absolute value of the jerk

Used for quadratic velocity profile only

Important

The interpolation time and cycle time of the respective task, in which the interpolator is called, has to match for identical behavior of the CNC editor and online application.

Tab: Tabular Editor

The columns of the tabular editor and its order are defined on this tab.

Table columns

List of all available attributes

standard icon : The attribute is visible in the tabular editor.

The order in this list determines the line order in the tabular editor.

Moves the selected attribute upwards by one line

Moves the selected attribute downwards by one line