Operator control (hardware) 
  2.2 Operator controls 
SIMOTION D4x5-2 
Manual, 02/2012 
43 
2.2.2  DIAG button 
Layout    
The DIAG button is located behind the blanking cover on the SIMOTION D4x5-2. 
Function 
The diagnostic data and non-volatile SIMOTION data is backed up on the CompactFlash 
card via the DIAG button. 
The DIAG button function therefore corresponds to the function of switch position "D" of the 
Service selection switch.  
Various options are available for backing up the data:  
●  Option 1: Backup during operation (in STOP/STOPU/RUN operating state) 
●  Option 2: Backup during the module startup 
With option 1, the DIAG button only has to be pressed briefly to trigger the data backup. The 
DIAG button is therefore preferable to switch position "D" of the Service selection switch. 
With option 2, the DIAG button has to be pressed until the boot procedure is completed. As 
this can take 20-30 seconds, switch position "D" is preferable here.  
Additional references 
For detailed information on creating diagnostic data and backing up / restoring non-volatile 
SIMOTION data, refer to the 
SIMOTION D4x5-2
 Commissioning and Hardware Installation 
Manual.  
2.2.3  RESET button 
Arrangement 
The RESET button is located behind the blanking cover on the SIMOTION D4x5-2.  
Performing a reset operation 
A reset causes the entire system to be reset and requires the system to be ramped-up again. 
It is similar to a "Power On Reset" except that the 24 V power supply does not have to be 
switched off.