What is the Difference Between a Soft Reboot and a Hard Reboot on a Real-Time FieldPoint Controller?

Updated Dec 14, 2017

Reported In

Hardware

  • cFP-2000
  • cFP-2010
  • cFP-2020
  • cFP-2100
  • cFP-2120
  • cFP-2110
  • FP-2015

Issue Details

What is the difference between a soft reboot and a hard reboot on a real-time FieldPoint controller?

Solution

A soft reboot, by definition, is anything that uses only software to reboot the controller. Therefore, a soft reboot can be performed through the Reboot button in MAX or using the RT Reboot Controller. vi in LabVIEW (The LabVIEW Real-Time module must be installed on the Host PC to have access to the RT Reboot Controller.vi.). In a soft reboot, power is never removed from the controller. A hard reboot is defined as a reboot the removes power to the controller (i.e. pressing the Reboot button or unplugging the controller). 

The only technical difference is that a hard reboot will erase everything stored in RAM while a soft reboot will not. One cannot expect that things stored in RAM will be preserved after a soft reboot because RAM may be overwritten when the BIOS runs, and RAM will most likely not be allocated in the same way it was prior to the reboot.

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