HEIDENHAIN TNC 620 User Manual page 585

Conversational programming cnc control; nc software 817600-03; 817601-03; 817605-03

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Select the position display

In the Manual Operation mode and the Program Run, Full

Sequence and Program Run, Single Block modes of operation, you

can select the type of coordinates to be displayed:

The figure on the right shows the different tool positions

Initial 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 in the input system; difference

between actual and target positions

Distance remaining to the programmed

position with reference to the machine datum;

difference between reference and target

Traverses that were carried out with

handwheel superimpositioning (M118)

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 additional status display.

HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015

Select the position display