2 machine datum – HEIDENHAIN TNC 407 (243 020) Technical Manual User Manual
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MP1350
Type of reference mark approach
Entry:
0 = measuring system with distance-coded reference marks
1 = measuring system with one reference mark
2 = special sequence (linear measurement via rotary encoder)
3 = measuring system with distance-coded reference marks
MP1350.0 X
axis
MP1550.1 Y
axis
MP1350.2 Z
axis
MP1350.3 Axis
4
MP1350.4 Axis
5
Marker
Function
Set
Reset
M2136
Reference marks X axis not yet traversed
NC
NC
M2137
Reference marks Y axis not yet traversed
M2138
Reference marks Z axis not yet traversed
M2139
Reference marks axis 4 not yet traversed
M2140
Reference marks axis 5 not yet traversed
M2556
Reference end-position for X axis
PLC
PLC
M2557
Reference end-position for Y axis
M2558
Reference end-position for Z axis
M2559
Reference end-position for axis 4
M2506
Reference end-position for axis 5
Address
Function
Set
Reset
W272
Operating mode
NC
NC
1 = Manual operation
2 = Handwheel
3 = Positioning with manual entry
4 = Program run/single block
5 = Program run/full sequence
7 = Pass over reference points
2.2 Machine datum
The reference mark defines a point on the measuring system. The reference points of all axes define
the scale datum. MP960.x contains the distance from the scale datum to the machine datum. All
REF-based displays and positioning movements refer to the machine datum (see also Section
"Display and operation").