Selecting the position display mode – HEIDENHAIN TNC 122 User Manual User Manual
Page 17

2
Working with the TNC 122 – First Steps
TNC 122
17
Selecting the position display mode
The TNC can show different types of position values for a tool
position.
Fig 2.1 shows the following positions
•
Starting position of the tool
•
Target position of the tool
•
Workpiece datum
•
Scale reference point
The TNC position display can be set to show the following types of
information:
•
Actual position
The position at which the tool is presently located as refer-
enced to the workpiece datum.
•
Servo lag
The difference between nominal and actual positions
•
Actual position referenced to the scale reference point
To change position display modes:
⇒
⇒
⇒
⇒
⇒ Set another position display mode in the user parameter
MP 7322 (see Chapter 8).
4
2
3
1
Z
A
W
M
Fig 2.1:
Tool and workpiece positions
W
M
Z
2
2
4
A
1
3
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