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Method for Synchronous Execution of Programs in a Redundant Automation System

  • US 20130185726A1
  • Filed: 01/11/2013
  • Published: 07/18/2013
  • Est. Priority Date: 01/12/2012
  • Status: Abandoned Application
First Claim
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1. A method for synchronous execution of computer programs in a redundant automation system comprising a plurality of subsystems, wherein at least one request for execution of one computer program of the computer programs forms a basis for starting a scheduling pass during which a decision is performed to determine whether the one computer program of the computer programs is executed in sync on each of the plurality of subsystems, the method comprising the steps of:

  • recording, by each of the plurality of subsystems, for each of the computer programs, a local execution time which has already accrued, the local execution time indicating for how long a respective computer program of the computer programs has already been executed on a respective subsystem of the plurality of subsystems; and

    performing the decision during the scheduling pass based on a respective recorded accrued local execution time and one of a respective prescribable and prescribed maximum execution time for the requested one computer program of the plurality of computer programs, the requested computer program being unexecuted on the plurality of subsystems if an accrued local execution time one of reaches a respective maximum execution time and exceeds the respective maximum execution time.

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