HEIDENHAIN TNC 320 User Manual page 466

Conversational programming

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Table of Contents

MOD functions

15.2 Position Display Types

Position Display Types

In the Manual Operation mode and in the Program Run modes of

operation, you can select the type of coordinates to be displayed.

The figure at right shows the different tool positions:

Starting position

Target position of the tool

Workpiece datum

Machine datum

The TNC position displays can show the following coordinates:

Nominal position: the value presently

commanded by the TNC

Actual position; current tool position

Reference position; the actual position relative

to the machine datum

Reference position; the nominal position

relative to the machine datum

Servo lag; difference between nominal and

actual positions (following error)

Distance remaining to the programmed

position; difference between actual and target

With the MOD function Position display 1, you can select the

position display in the status display.

With the MOD function Position display 2, you can select the

position display in the status display.

TNC 320 | User's Manual HEIDENHAIN Conversational Programming | 5/2013