Commissioning (hardware) 
  4.3 User memory concept 
SIMOTION D4x5-2 
Commissioning and Hardware Installation Manual, 02/2012 
105 
Error scenarios 
In the event of an error, a diagnostic buffer entry signals that it was not possible to determine 
whether a module has been replaced.  
Possible reasons are: 
●  The serial number of the device cannot be determined. 
●  The serial number saved on the CompactFlash card cannot be determined, for example, 
due to a corrupt file system. 
●  The controller has not powered up. 
●  The new serial number could not be transferred to the CompactFlash card, for example, 
due to a corrupt file system. 
Restart after reloading 
The system variable device.startupData.operationMode is used to define whether the 
SIMOTION D4x5-2 control unit goes into the RUN state or the last operating state after a 
power-on/restart. 
Possible values of device.startupData.operationMode:  
LAST_OPERATION_MODE [0] (default setting) 
RUN [1] 
With LAST_OPERATION_MODE [0], the module remains in the STOP state after reloading 
the non-volatile SIMOTION data and must be switched manually to the RUN state with 
SCOUT, IT DIAG or the mode selector switch . 
With RUN [1], the module goes automatically into the RUN state after reloading. 
SINAMICS module replacement 
A module replacement is detected as of SINAMICS V4.5.   
For the SINAMICS Integrated, CX32-2 and SINAMICS S120 CU310-2/CU320-2, a module 
replacement is also identified via the serial number. Non-volatile SINAMICS data (NVRAM 
data) backed up previously via the CU parameter p7775 on the CompactFlash card, is then 
automatically transferred to the control unit.