MOD Functions | Select the position display
19.6 Select the position display
Application
You can influence the display of the coordinates for the operating
mode Manual operation and the operating modes Program run,
full sequence and Program run, single block.
The figure on the right shows the different tool positions:
Initial position
Target position of the tool
Workpiece datum
Machine datum
You can select the following coordinates for the control's position
displays:
Display
Function
NOML
Nominal position: The value currently command-
ed by the control
ACTL
Actual position; current tool position
REF ACTL
Reference position; actual position relative to the
machine datum
REF NOML
Reference position; nominal position relative to
the machine datum
LAG
Servo lag; difference between nominal and actual
positions
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
The NOML and ACTL displays differ
solely with regard to following error.
Refer to your machine manual.
Your machine tool builder defines
whether the ACTL and NOML display
deviates from the programmed
position by the DL oversize of the tool
call.
19
747