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8
Cycles
TNC 426/TNC 425/TNC 415 B/TNC 407
Position display in a tilted system
On activation of Cycle G80 the displayed positions (ACTL. and NOML.)
and the datum indicated in the additional status display are referenced to
the tilted coordinate system. The positions displayed immediately after
cycle definition may not be the same as the coordinates of the last
programmed position before Cycle G80.
As soon as you move an axis in a tilted system the compensation for this
specific axis is activated. Move all axes to activate compensation for all
axes.
Work space monitoring
The TNC only monitors the axes in the tilted system that are moved. If any
of the software limit switches is traversed the TNC will display an error
message.
Combining coordinate transformation cycles
When combining coordinate transformation cycles, always make sure the
working plane is swiveled around the active datum. You can program a
datum shift before activating Cycle G80. In this case, the machine-based
coordinate system is shifted. If you program a datum shift after having
activated Cycle G80, the tilted coordinate system is shifted. When
resetting, it is important to use the reverse procedure—the cycle that was
last defined should be reset first.
Example:
1. Activate datum shift
2. Activate tilting function
3. Activate rotation
.
.
Machining
.
.
1. Reset rotation
2. Reset tilting function
3. Reset datum shift
Automatic workpiece measurement in the tilted system
Cycle G55 (see page 7-23) enables you to have the TNC measure a
workpiece in the tilted system automatically. The measured data are
stored in Q parameters for further processing (for example, for printout).
