Interactive Klartext course · Lesson 3 / 15

Linear moves, FMAX and safe approach

Build a safe approach sequence with fast clearance moves above the workpiece and a controlled cutting move near the material.

Start this interactive lesson See the example

What you will learn

Program straight tool motion with L blocks.
Use FMAX for rapid positioning clear of the workpiece.
Switch to a programmed feed before the cutting move.

How it works

An L block moves the tool in a straight line to the programmed endpoint. Coordinates omitted from a block remain unchanged, so a Z-only move keeps the current X and Y position.

Rapid positioning is intended for clearance motion, not cutting. Approach the workpiece from a known safe height and use a controlled feed when entering material.

Klartext example

Try the essential blocks

This compact example introduces the lesson topic. Use the guided practice for the complete checked exercise.

L X+20 Y+40 Z+50 FMAX
L Z+2 FMAX
L Z-5 F200
L Z+50 FMAX

Ready to practice?

Write the blocks and check the 3D result

Open lesson 3 in TNC Sim