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Saving and restoring controller state and context in an open operating system

  • US 6,901,298 B1
  • Filed: 09/30/2002
  • Issued: 05/31/2005
  • Est. Priority Date: 09/30/2002
  • Status: Expired due to Term
First Claim
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1. A system that facilitates retention of data in an industrial controller that employs an open operating system, comprising:

  • a volatile memory component that stores controller state and context data;

    a power monitoring component that monitors power state of the controller;

    a non-volatile memory component; and

    a processing component that generates an image of the controller state and context data from the volatile memory upon receiving a signal from the power monitoring component that the controller is undergoing a power loss condition, and saves the image in the non-volatile memory component.

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