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Method for operating automation control equipment applications

  • US 6,938,111 B2
  • Filed: 04/19/2002
  • Issued: 08/30/2005
  • Est. Priority Date: 04/19/2002
  • Status: Expired due to Fees
First Claim
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1. A method for operating a control application for automation equipment having a control unit with at least one processor running under an operating system, the operating system configured for preventing calling of the processor commands from the control application, the processor communicating with the controlled automation equipment via a programmable bus interface, the method comprising the steps of:

  • performing read and write access by the control application to the bus interface directly; and

    suspending processing of hardware interrupt calls of the process during a preselected time period;

    wherein the control unit comprises a processor and bus interface adapted to read and write contents of a multi-port storage device, access of the bus interface to the storage device being prevented while the processor changes the contents of the storage device, and where hardware interrupt calls of the processor are not processed at least while access to the bus interface is prevented.

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