Requirements For Performing The Test - Siemens SINUMERIK 840Di sl Function Manual

12/2008
Notice
Please observe the information on the operator panel!

2.3.2 Requirements for performing the test

Requirements on the control
When making measurements, the machine axes must be moved with precisely the
motion profile that is defined in the NC program. In addition, it must also be
guaranteed that the motion is also executed in the machine coordinates.
The following functions in the NCK could be problematical when carrying out
measurements (sample selection):
•
Asynchronous subprograms
•
Static synchronized actions
•
Coupled axes
•
Kinematic transformations
•
Superimposed (overlaid) motion, such as DRF, external work offset
•
Tool length compensation
•
Functions, that influence the velocity, such as G95
•
Functions that change the position, such as DIAMON
•
Axis replacement/geometry axis replacement
•
Axis is passed over to the PLC (PLC axis)
The NC program for performing the measurement does not affect the functions
listed above. Only the zero offsets are disabled and the offset produced by DRF
and external zero point offset is compensated statically, i.e. the value is corrected
by the value that applies at the beginning of the measurement.
Orientation transformations are a special case. It is possible to execute
measurements with the geometry axes when transformation is active. However, the
offset of the geometry axis coordinates produced by the orientation axes is not
compensated for. It is therefore advisable to deactivate transformation.
Couplings between axes should be separated before the measurement movement
(e.g. in the prolog program). The NC program of the ePS system does not separate
couplings. The ePS system assumes that it is possible to load, select, and start an
NC program (with subroutines) downloaded from the ePS system on the machine
in a particular channel. For machines where the PLC prevents the machine
operator from selecting or starting any NC program, the PLC can communicate
with the ePS system via DB10.DBB90 or DBB91.
Machine data must be set in the control to acquire data for the condition monitoring
measurements. Not only Trace Server machine data but also MD 36730:
DRIVE_SIGNAL_TRACKING must be set.
Drives that are linked via Profibus must be handled differently. Here the Profibus
configuration must be changed so that the torque values can be transmitted to the
control cyclically.
© Siemens AG 2008 All Rights Reserved
ePS Network Services, Function Manual (FH) - Release 12/2008
2 Maschine information
2.3 Test series on the machine
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