HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 342)

11-9
11 MOD Functions
TNC 425/TNC 415 B/TNC 407
Fig. 11.6: Characteristic positions on the workpiece and scale
5 4
2 3
1
Z Z A
W
M
11.7 Selecting Position Display Types
The positions indicated in Fig. 11.4 are:
• Starting position A
• Target position of the tool
Z
• Workpiece datum
W
• Machine datum M
The TNC position display can show the
following types of information:
• Nominal position: the value presently
commanded by the TNC 1 ....................................................... NOML.
• Actual position: the position at which the
tool is presently located
2
......................................................... ACTL.
• Servo lag: the difference between
nominal and actual positions 3 .................................................. LAG
• Reference position: the actual position as
referenced to the machine datum
4
......................................... REF
• Distance remaining to the programmed position: the
difference between actual and target positions 5 .................... DIST.
• Deflection of the TM 110 measuring touch probe system ......... DEFL.
The POSITION DISPLAY mod function (see Fig. 11.6) permits different
types of position information for the status display and the additional
status display:
• The upper selection
determines the position display in the status display.
• The lower selection
determines the position display in the additional status display.