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Backplane filtering and firewalls

  • US 10,375,106 B1
  • Filed: 11/29/2016
  • Issued: 08/06/2019
  • Est. Priority Date: 01/13/2016
  • Status: Active Grant
First Claim
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1. A control system, comprising:

  • a processing module;

    a plurality of input/output (IO) modules;

    a backplane communications bus; and

    a hardware logic component interposed between the backplane communications bus and the processing module such that the hardware logic component is in communication with the processing module and the backplane communications bus of the control system, wherein the hardware logic component receives signals output by the processing module, and wherein the hardware logic component is configured to perform the following acts;

    responsive to receiving a signal from the processing module that is directed to at least one of the IO modules, determining that the signal comprises an impermissible communication for the control system; and

    responsive to determining that the signal comprises an impermissible communication for the control system, executing, at the hardware logic component, a model of control logic of the processing module of the control system such that the hardware logic component performs at least some of the functionality of the processing module of the control system.

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