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    • 6. 发明授权
    • Method and apparatus for an active standby control system on a network
    • 网络上主动备用控制系统的方法和装置
    • US07032029B1
    • 2006-04-18
    • US09612636
    • 2000-07-07
    • Allan TanzmanDennis J. W. DubeStephen Mooney
    • Allan TanzmanDennis J. W. DubeStephen Mooney
    • G06F15/16G06F3/00G06F11/00G05B9/02
    • G05B19/058G05B9/03G05B2219/14132
    • A method and apparatus for providing an active standby control system comprising the steps of providing a first and second programmable logic controller (PLC), each controller having an operating state. Each controller further including a network module board operably connected to a network; a control unit, a remote I/O head; and, a hot standby module, each hot standby module is operably connected together. Operably connecting each programmable logic controller to a network. Assigning a network address identifier, i.e., Internet Protocol or Media Access Control address, to each programmable logic controller and sensing the operating state of each programmable logic controller. The network address identifier of each programmable logic controller is determined by the operating state of each respective programmable logic controller. The present invention is also directed to an apparatus for communication with at least one device which resides on a standard communications network using a standard communications protocol. The apparatus has a scanner for scanning the device, a device scan table for storing data relating to the device, and a standard communications interface for interfacing between the device scanner and the standard communications network using the standard communication protocol.
    • 一种用于提供主动待机控制系统的方法和装置,包括以下步骤:提供第一和第二可编程逻辑控制器(PLC),每个控制器具有操作状态。 每个控制器还包括可操作地连接到网络的网络模块板; 控制单元,远程I / O头; 和热备用模块,每个热备模块可操作地连接在一起。 可操作地将每个可编程逻辑控制器连接到网络。 向每个可编程逻辑控制器分配网络地址标识符,即因特网协议或媒体访问控制地址,并感测每个可编程逻辑控制器的操作状态。 每个可编程逻辑控制器的网络地址标识符由每个可编程逻辑控制器的工作状态决定。 本发明还涉及一种用于使用标准通信协议驻留在标准通信网络上的至少一个设备进行通信的装置。 该装置具有用于扫描设备的扫描仪,用于存储与该设备有关的数据的设备扫描表以及用于使用标准通信协议在设备扫描器与标准通信网络之间进行接口的标准通信接口。