Siemens SINAMICS G120 Operating Instructions Manual page 437

3. ... 10. In the "Encoder data" screen form, adapt the settings corresponding to the data
You have adapted the encoder data.
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
sheet of your encoder.
The "Details" tab is used for application-specific settings, e.g. to invert the encoder signal.
The fine resolution can be separately set for the process data Gx_XIST1 and Gx_XIST2.
2 bit fine resolution is practical for square wave encoders. Typically, sin/cos encoders
have an 11 bit fine resolution.
Appendix
A.8 Application Examples
437