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    Apparatus and methods to communicatively couple field devices to controllers in a process control system
    3.
    发明授权
    Apparatus and methods to communicatively couple field devices to controllers in a process control system 有权
    将现场设备通信耦合到过程控制系统中的控制器的装置和方法

    公开(公告)号：US09083548B2

    公开(公告)日：2015-07-14

    申请号：US12236165

    申请日：2008-09-23

    申请人： David Holmes ,  Gary Keith Law

    发明人： David Holmes ,  Gary Keith Law

    IPC分类号： H04L12/40 ,  H04L29/08 ,  H04L29/06 ,  H04L12/26

    CPC分类号： H04L12/40013 ,  G05B2219/25014 ,  G05B2219/25248 ,  H04L43/50 ,  H04L67/12 ,  H04L69/18 ,  H04L2012/40221 ,  H04L2012/40254

    摘要： Example apparatus and methods to communicatively couple field devices to controllers in a process control system are disclosed. An example method of changing a communication protocol of a first field device in a process control system includes decoupling from the first field device a first removable communication module configured to communicate using a first communication protocol. The example method also includes coupling to the first field device a second removable communication module configured to communicate using a second communication protocol. After coupling the second removable communication module, the first field device is configured to communicate using the second communication protocol. In addition, the first field device is coupled to a first communication channel on an input/output card when communicating using the first communication protocol and the first field device is coupled to the first communication channel on the input/output card when communicating using the second communication protocol.

    摘要翻译： 公开了将现场设备通信耦合到过程控制系统中的控制器的示例性设备和方法。 改变过程控制系统中的第一现场设备的通信协议的示例性方法包括：从第一现场设备解耦配置为使用第一通信协议通信的第一可移动通信模块。 示例性方法还包括将第二可移动通信模块耦合到第一现场设备，第二可移动通信模块被配置为使用第二通信协议进行通信。 在耦合第二可移动通信模块之后，第一现场设备被配置为使用第二通信协议进行通信。 此外，当使用第一通信协议进行通信时，第一现场设备耦合到输入/输出卡上的第一通信信道，并且当使用第二通信协议进行通信时，第一现场设备耦合到输入/输出卡上的第一通信信道 通讯协议。

    Distributed equipment arbitration in a process control system
    4.
    发明授权
    Distributed equipment arbitration in a process control system 有权
    过程控制系统中的分布式设备仲裁

    公开(公告)号：US08127063B2

    公开(公告)日：2012-02-28

    申请号：US12356385

    申请日：2009-01-20

    申请人： Godfrey Roland Sherriff ,  Gary Keith Law

    发明人： Godfrey Roland Sherriff ,  Gary Keith Law

    IPC分类号： G06F12/00 ,  G06F13/14 ,  G06F13/38 ,  G06F19/00 ,  G06F9/46 ,  G05B11/01

    CPC分类号： G05B19/41865 ,  G05B2219/32079 ,  G05B2219/32328 ,  Y02P90/20

    摘要： A distributed process control equipment ownership arbitration system and method for arbitrating equipment ownership conflicts are disclosed. Individual control modules representing various process control entities within a process control system define a plurality of lists or queues for storing equipment arbitration information. Requests by one process control entity to acquire ownership over another process control entity are represented by an arbitration token that represents the ownership relationship sought by the acquiring process control entity. Copies of the arbitration token are communicated between the respective control modules and stored in the various arbitration queues defined by the control modules, depending on the status of the acquisition request. Upon receiving an acquisition request from another process control entity, the control module associated with the targeted process control entity decides whether the targeted process control entity is available to be acquired by the requesting control entity based on arbitration rules that are embedded within the control module itself. Once the targeted process control entity has been acquired by another process control entity it may not be acquired by any other process control entity until it has been released by the acquiring process control entity.

    摘要翻译： 披露了分布式过程控制设备所有权仲裁系统和仲裁设备所有权冲突的方法。 表示过程控制系统内的各种过程控制实体的各个控制模块定义用于存储设备仲裁信息的多个列表或队列。 一个过程控制实体对另一过程控制实体获取所有权的请求由代表获取过程控制实体所寻求的所有权关系的仲裁令牌来表示。 仲裁令牌的副本在相应的控制模块之间通信，并且根据获取请求的状态存储在由控制模块定义的各种仲裁队列中。 在从另一个进程控制实体接收到获取请求时，与目标进程控制实体相关联的控制模块基于嵌入在控制模块本身内的仲裁规则来决定目标进程控制实体是否可被请求控制实体获取 。 一旦目标过程控制实体已被其他过程控制实体获取，则在获取过程控制实体已被释放之前，其可能不被任何其它过程控制实体获取。

    Removable security modules and related methods
    5.
    发明授权
    Removable security modules and related methods 有权
    可拆卸的安全模块及相关方法

    公开(公告)号：US08977851B2

    公开(公告)日：2015-03-10

    申请号：US12356863

    申请日：2009-01-21

    申请人： Lee Allen Neitzel ,  Gary Keith Law ,  Godfrey R. Sherriff

    发明人： Lee Allen Neitzel ,  Gary Keith Law ,  Godfrey R. Sherriff

    IPC分类号： G05B19/042 ,  G06F12/14

    CPC分类号： G05B19/0428 ,  G05B2219/25107 ,  G05B2219/25326 ,  G06F12/1408

    摘要： Example removable security modules for use with process control devices and related methods are disclosed. An example removable security module includes a body configured to be removably coupled to the process control device and a memory disposed in the body with a shared secret stored in the memory. The example removable security module also includes a processing unit disposed in the body, coupled to the memory and configured to read information from the process control device, compare the information to the shared secret and authenticate the process control device based on the comparison.

    摘要翻译： 公开了用于过程控制设备和相关方法的示例性可移除安全模块。 示例性可移除安全模块包括被配置为可移除地耦合到过程控制设备的主体和布置在身体中的具有存储在存储器中的共享秘密的存储器。 示例性可移除安全模块还包括设置在主体中的处理单元，其耦合到存储器并且被配置为从过程控制设备读取信息，将信息与共享秘密进行比较，并且基于该比较验证过程控制设备。

    Methods and apparatus to adjust control loop timing in a process control system
    6.
    发明授权
    Methods and apparatus to adjust control loop timing in a process control system 有权
    在过程控制系统中调整控制回路定时的方法和装置

    公开(公告)号：US08340790B2

    公开(公告)日：2012-12-25

    申请号：US12551181

    申请日：2009-08-31

    申请人： Gary Keith Law ,  Marty James Lewis ,  Godfrey Roland Sherriff

    发明人： Gary Keith Law ,  Marty James Lewis ,  Godfrey Roland Sherriff

    IPC分类号： H03K3/017 ,  G06F19/00

    CPC分类号： G05B19/418 ,  G05B2219/25474 ,  G05B2219/33097 ,  G05B2219/42256 ,  Y02P90/02 ,  Y02P90/20

    摘要： Example methods and apparatus to adjust control loop timing in a process control system are disclosed. A disclosed example method includes receiving a first input signal generated via a first process control device within a process control system, determining within the process control system if the first input signal is received during a first scheduled time period of a control loop, and adjusting within the process control system a timing of a subsequent input signal received from the first process control device to cause the subsequent input signal to be received during a subsequent scheduled time period of the control loop, wherein the timing of the subsequent input signal is based on at least when the first input signal was received.

    摘要翻译： 公开了一种在过程控制系统中调整控制环定时的示例性方法和装置。 所公开的示例性方法包括接收在过程控制系统内经由第一过程控制设备生成的第一输入信号，在过程控制系统内确定在控制回路的第一调度时间段期间是否接收到第一输入信号， 所述过程控制系统是从所述第一处理控制装置接收的后续输入信号的定时，以在所述控制回路的后续预定时间段期间接收所述后续输入信号，其中所述后续输入信号的定时基于 至少当接收到第一个输入信号时。

    Methods and apparatus to apply multiple trip limits to a device in a process control system
    9.
    发明授权
    Methods and apparatus to apply multiple trip limits to a device in a process control system 有权
    在过程控制系统中对设备应用多个跳闸限制的方法和装置

    公开(公告)号：US09239576B2

    公开(公告)日：2016-01-19

    申请号：US13399251

    申请日：2012-02-17

    申请人： Keith Richard Bellville ,  Gary Keith Law ,  Godfrey R. Sherriff ,  David Mark Smith

    发明人： Keith Richard Bellville ,  Gary Keith Law ,  Godfrey R. Sherriff ,  David Mark Smith

    IPC分类号： G05B11/01 ,  G05B23/02

    CPC分类号： G05B23/0235

    摘要： Methods and apparatus to apply multiple trip limits to a device in a process control system are disclosed. An example method involves monitoring a value of a parameter associated with the operation of the device and receiving an input indicative of an operational state of the device, where a first input indicates a first operational state and a second input indicates a second operational state. If the first input is received, comparing via a function block the value of the parameter to a first trip limit, and if the second input is received, comparing via the function block the value of the parameter to a second trip limit, and implementing a response based on the comparison.

    摘要翻译： 公开了在过程控制系统中对设备应用多个跳闸限制的方法和装置。 示例性方法包括监视与设备的操作相关联的参数的值，并且接收指示设备的操作状态的输入，其中第一输入指示第一操作状态，第二输入指示第二操作状态。 如果接收到第一输入，则通过功能块将参数的值与第一跳闸限制进行比较，并且如果接收到第二输入，则通过功能块将参数的值与第二跳闸限制进行比较，并且实现 基于对比的回应。

    Integrated bus controller and power supply device for use in a process control system
    10.
    发明授权
    Integrated bus controller and power supply device for use in a process control system 有权
    集成总线控制器和供电装置，用于过程控制系统

    公开(公告)号：US08949665B2

    公开(公告)日：2015-02-03

    申请号：US12873853

    申请日：2010-09-01

    申请人： Gary Keith Law ,  Kent Allen Burr ,  Michael L. Marshall ,  Michael Kessler

    发明人： Gary Keith Law ,  Kent Allen Burr ,  Michael L. Marshall ,  Michael Kessler

    IPC分类号： G06F11/00 ,  H04B3/54 ,  H04L12/40 ,  H04L25/02

    CPC分类号： H04B3/548 ,  H04B2203/5458 ,  H04L12/40013 ,  H04L25/0266 ,  H04L25/0278 ,  H04L25/0298 ,  Y02P90/18

    摘要： An integrated bus controller and power supply device includes a typical or standard bus controller and a bus power supply disposed in a common housing, the size and external configuration of which may match a standard bus controller device associated with a typical I/O communication network. The bus controller may store and implement one or more control routines using one or more field devices connected to the I/O communication network while the bus power supply generates and provides the appropriate power signal to the bus of the I/O communication network, the power signal being used to power the field devices connected to the I/O communication network. The integrated bus controller and power supply device can be easily connected to the bus of the I/O communication network to provide both bus controller functionality and bus power supply functionality on the I/O communication network, without the need of configuring and attaching separate, dedicated bus controller and power supply devices to the bus and having to wire these devices together using multiple different terminal blocks.

    摘要翻译： 集成总线控制器和电源装置包括典型的或标准的总线控制器和布置在公共壳体中的总线电源，其大小和外部配置可以与与典型I / O通信网络相关联的标准总线控制器设备匹配。 总线控制器可以使用连接到I / O通信网络的一个或多个现场设备来存储和实现一个或多个控制例程，同时总线电源产生并且向I / O通信网络的总线提供适当的功率信号， 电源信号用于为连接到I / O通信网络的现场设备供电。 集成总线控制器和电源设备可以方便地连接到I / O通信网络的总线，以在I / O通信网络上提供总线控制器功能和总线电源功能，而无需配置和附加单独的， 专用总线控制器和电源设备到总线，并且必须使用多个不同的接线端子将这些设备连接在一起。