Siemens SINUMERIK 840D sl Programming Manual page 473
Measuring cycles hmi sl
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Probes are therefore classified in three groups according to the number of directions in
which they can be deflected.
● Multidirectional
● Bidirectional
● Monodirectional (mono probe)
Reference groove
A groove located in the working area (permanent feature of the machine) whose precise
position is known and that can be used to calibrate workpiece probes.
Safe area
The safe area _TSA does not affect the offset value; it is used for diagnosis. If this limit is
reached, there is a defect in the probe or the set position is incorrect.
Setpoint
In the measuring procedure "inprocess measurement", a position is specified as the setpoint
value for the cycle at which the signal of the touch-trigger probe is expected.
Tolerance bottom limit
When measuring a dimensional deviation as the lower tolerance limit (_TLL) ranging
between "2/3 tolerance of workpiece" and "Dimensional difference control", this is regarded
100% as tool compensation. The previous average value is erased.
Tolerance top limit
When measuring a dimensional deviation as the upper tolerance limit (_TUL) ranging
between "2/3 tolerance of workpiece" and "Dimensional difference control", this is regarded
100% as tool compensation. The previous average value is erased.
Tool environment
As from NCK SW 6.3, you can save the operating environment of a particular tool you are
using. This is to allow you to correct the tool used to measure a workpiece taking into
account the operating conditions (environment: G commands, setting data,...).
You then no longer have to specify the T, D, DL number in the offset explicitly. These are
included in the stored tool environment. The name of a tool environment can have up to 32
characters.
Tool name
If tool management is active, the name of the tool can be entered in parameter _TNAME as
an alternative to the -> tool number.
The tool number is derived from it within the cycle and entered in _TNUM.
Measuring cycles
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Glossary
473
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