Siemens SINAMICS S120 Series Function Manual page 71

System response - reading out diagnostics data
The converter can request diagnostics data via "Read data set" (detailed information is
provided in the PROFINET-IO specification (http://www.profibus.com)).
Example:
For example, a read record with index 0x800C can be used to read out diagnostics data from
specific sub slots. The following rules apply as example:
● 1 message block
if, at this drive object (one or several) faults of the same message class are identified
● n messages
if, at this drive object, n faults of different message classes are identified
Note
If a fault is active on the CU drive object, then this fault is propagated to all of the drive
objects associated with the CU. This fault can therefore be read out at each drive object.
Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
Communication according to PROFIdrive
3.5 Diagnostics channels
69