Siemens SINUMERIK 840Di sl Function Manual page 36

2 Maschine information
2.2 Variable monitors - Measurements and measurement series
Displaying the measurement results
You can view measurement results both on the machine operator panel and on the
PC. Trend curves produced by measurement series can only be viewed on the PC.
The warning and critical limits of the characteristics can give the machine operator
evaluation information about how far the qualitative state of the machine is from the
limit criterion.
Fig. 2-16: Examples of time series
The trend curve can be generated from the measuring type-specific characteristics
(characteristic over time) by cyclic repetition of individual measurements. This is
used in particular as a basis for condition-oriented maintenance. For this,
measurement series can be generated based on existing individual measurements.
This ensures that the measurement series is based on the same measurement.
Measurement series are used as the basis for condition-oriented maintenance
because the trend curve and the limit values provide a basis for planning
maintenance activities.
How each test is conducted is described in Section 2.3 Test series on the
machine.
The machine operator can view the measurement results on the operator panel of
the machine and on the PC. Trend curves derived from measurement series can
only be viewed by the operator on the PC.
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ePS Network Services, Function Manual (FH) - Release 12/2008
12/2008