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    System and method for creating a set of monitor and effect blocks from a cause and effect matrix
    1.
    发明授权
    System and method for creating a set of monitor and effect blocks from a cause and effect matrix 有权

    公开(公告)号：US11073812B2

    公开(公告)日：2021-07-27

    申请号：US15766906

    申请日：2016-10-07

    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.

    Inventor： Gary K. Law ,  Godfrey R. Sherriff

    IPC: G05B19/05 ,  G05B23/02 ,  G05B19/042 ,  G06F3/0482 ,  G06F3/0484

    Abstract: A system and method of configuring monitor blocks and effect blocks associated with a process control system for a process plant includes causing a display device to display a graphical user interface, the graphical user interface indicating a first monitor block, a second monitor block, and an effect block. The system and method further includes enabling a user to input configuration data via the input device, including: (i) configuring one of the outputs of the first monitor block to serve as one of the inputs of the second monitor block, (ii) configuring an additional one of the outputs of the first monitor block and one of the outputs of the second monitor block to serve as inputs to the effect block, and (iii) designating at least one of the plurality of cells of each of the first monitor block, the second monitor block, and the effect block as a trigger associated with the respective input/output pair for the respective cell and corresponding to a condition in the process plant.

    System and method for representing a cause and effect matrix as a set of numerical representations
    2.
    发明授权
    System and method for representing a cause and effect matrix as a set of numerical representations 有权

    公开(公告)号：US10802456B2

    公开(公告)日：2020-10-13

    申请号：US15766900

    申请日：2016-10-07

    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.

    Inventor： Gary K. Law ,  Godfrey R. Sherriff

    IPC: G05B19/05 ,  G05B23/02 ,  G05B19/042 ,  G06F3/0482 ,  G06F3/0484

    Abstract: A system and method for defining a cause and effect matrix (CEM) within a process control system for a process plant, including accessing a cause and effect matrix (CEM) having a set of causes and a set of effects, wherein each of the set of causes represents a condition within the process plant and each of the set of effects represents an effect to be performed within the process plant. The system and method further includes, for each of the set of effects: (i) identifying a subset of the set of causes according to a corresponding set of the cause-effect pairs corresponding to the effect of the set of effects, (ii) defining the subset of the set of causes as a single-dimension matrix, and (iii) automatically calculating a numerical representation for the single-dimension matrix. The system and method further includes configuring a set of function blocks for the process control system according to the set of numerical representations.

    Firewall for Encrypted Traffic in a Process Control System
    4.
    发明申请
    Firewall for Encrypted Traffic in a Process Control System 审中-公开

    公开(公告)号：US20190028437A1

    公开(公告)日：2019-01-24

    申请号：US15656002

    申请日：2017-07-21

    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.

    Inventor： Gary K. Law ,  Godfrey R. Sherriff ,  Andrew E. Cutchin

    IPC: H04L29/06

    Abstract: A method for decreasing the risk of unauthorized access to an embedded node in a secure subsystem of a process control system includes receiving a message comprising a message header and a message payload, and determining that the message is an unlock message configured to access one or more protected functions of the embedded node, at least by analyzing a bit sequence of one or more bits in the message header. The method also includes determining whether a manual control mechanism has been placed in a particular state by a human operator, and, based upon those determinations, either causing or not causing the embedded node to enter an unlocked state in which one or more of the protected functions are accessible.

    Technologies for configuring voting blocks associated with a process control system
    8.
    发明授权
    Technologies for configuring voting blocks associated with a process control system 有权

    公开(公告)号：US11656594B2

    公开(公告)日：2023-05-23

    申请号：US16660439

    申请日：2019-10-22

    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.

    Inventor： Gary K. Law ,  Godfrey R. Sherriff

    IPC: G05B19/04 ,  G05B19/042 ,  G05B9/03

    CPC classification number: G05B19/0425 ,  G05B9/03 ,  G05B2219/14123

    Abstract: Techniques for enabling the configuration of a voting block for use in a process control system of a process plant are described. According to certain aspects, the voting block may have a voting scheme that dictates an output based on a set of inputs, where the voting block may be configured parametrically using various control selections that direct the behavior of the voting scheme. In particular, a bypass degrade selection may be specified for one or more inputs that controls whether a “bypass” input degrades the voting scheme, a status degrade selection may be specified for one or more inputs that controls whether a “bad” input degrades the voting scheme, and a trip enable selection may be specified that controls whether a trip occurs automatically under certain conditions. The control selections enable the voting blocks to be configured to conform with various specifications and other requirements.

    State machine function block with user-definable actions on a transition between states
    10.
    发明授权
    State machine function block with user-definable actions on a transition between states 有权

    公开(公告)号：US10274926B2

    公开(公告)日：2019-04-30

    申请号：US14740489

    申请日：2015-06-16

    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.

    Inventor： Gary K. Law ,  Godfrey R. Sherriff

    IPC: G06F3/048 ,  G05B19/402 ,  G05B9/02 ,  G05B19/042 ,  G06F3/0484 ,  G06F3/033 ,  G06F3/01

    Abstract: A control system, a safety system, etc., within a process plant may each use one or more state machine function blocks that can be easily integrated into a function block diagram programming environment. Such a state machine function block may include one or more inputs, which may cause a state machine implemented by the state machine function block to identify a next state as well as one or more transition actions to perform in accordance with transitioning from a current state to the next state. Configuration data associated with the transition actions may be retrieved from a database based on the current and next states of the state machine and at least one of the inputs. The state machine function block may also include one or more outputs that are generated based on the state transition.

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