Measuring-System Monitoring (Systems With Profibus Drives) - Siemens SINUMERIK 828D Function Manual

A3: Axis Monitoring, Protection Zones
2.2 Axis monitoring
2.2.5

Measuring-system monitoring (systems with PROFIBUS drives)

The NC has no direct access to the measuring-system hardware for systems with PROFIBUS drives and
therefore measuring-system monitoring is mainly performed by the drive software.
References:
Drive Functions SINAMICS S120
/FBU/SIMODRIVE 611 universal Function Manual
Encoder-limit-frequency monitoring
In the case of systems with PROFIBUS drives, encoder-limit-frequency monitoring is also performed in the NCK.
Zero-mark monitoring
PROFIBUS drives with incremental encoders
Zero-mark monitoring is performed by the drive software.
PROFIBUS drives with absolute encoders
The drive software performs the monitoring function, while the plausibility check is carried out in the NCK (as for
SIMODRIVE 611D systems).
Basic Functions
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0