Overview

Task

The “contour look-ahead” function of the CNC provides the PLC with programmed contour elements on the HLI in advance.

Effectiveness / possible applications

Process parameters, such as velocity, can be optimised based on the information about the future contour.

Parameterisation

The “contour look-ahead” function must be configured with the following parameters:

P-CHAN-00650 (alternatively P-STUP-00070) and
P-CHAN-00658 (alternatively P-STUP-00076).

Programming

In order to command the CNC to provide future contour elements on the HLI,

program sequences can be marked using the commands #CONTOUR LOOKAHEAD LOG ON/OFF or
the PLC can send a request via the control unit.

Mandatory note on references to other documents

For the sake of clarity, links to other documents and parameters are abbreviated, e.g. [PROG] for the Programming Manual or P-AXIS-00001 for an axis parameter.

For technical reasons, these links only function in the Online Help (HTML5, CHM) but not in pdf files since pdfs do not support cross-linking.