Firmware/BIOS description (SIMATIC IPC BX-56A, IPC BX-59A) 
34  Operating Instructions, 10/2023, A5E52427534-AA 
Automatic switching on the device 
The device always switches on when the supply voltage is applied. 
 
Danger from undesired startup of device after power failure 
Automatic startup of the device, for example, after a power failure, can result in undesired 
reactions of the machine or system and endanger operation.  
During system planning, check whether this automatic startup of your machine or system 
poses a safety risk and then change the device behavior appropriately.