公开(公告)号：US5777874A

公开(公告)日：1998-07-07

申请号：US599843

申请日：1996-02-12

申请人： Mark A. Flood ,  Bradley J. Bittorf ,  William B. Cook ,  D. Alan Graham ,  Robert D. Law ,  David E. Mohnke ,  Robert R. Sepsi ,  Jack F. Toma

发明人： Mark A. Flood ,  Bradley J. Bittorf ,  William B. Cook ,  D. Alan Graham ,  Robert D. Law ,  David E. Mohnke ,  Robert R. Sepsi ,  Jack F. Toma

IPC分类号： G05B19/05 ,  G06F11/20 ,  G06F11/16

CPC分类号： G06F11/2038 ,  G05B19/058 ,  G05B2219/1132 ,  G05B2219/14013 ,  G05B2219/14131 ,  G06F11/1675 ,  G06F11/20 ,  G06F11/2048

摘要： The present invention constitutes a data crossloading system for use with a programmable controller system having primary and secondary (or "back-up") systems each of which have redundant hardware components and have data structures associated with these components. The present invention further relates to the interconnection of the hardware components and to the processes for providing redundant data structures which enable a secondary or back-up system to rapidly and effectively assume control when a malfunction occurs in a primary control system. Both systems are connected via the same remote data links to common I/O racks which interface to sensing and output devices on the equipment being controlled. Data structure information in the primary system is specially crossloaded to the secondary system so that when a malfunction occurs that shuts down the primary system, the secondary system can begin execution of the same control programs and input and output the same data to the same I/O racks based on up to date data from the primary system. The crossloading of the data is accomplished through the use of special backup modules in both the primary and secondary (backup) control systems connected by a high speed communications link. Communications take place through the use of program utilities which establish a tightly coupled communications network between the primary and secondary systems. Additionally, on-line editing is enabled in stages so that when either control system can not properly execute the edit it is rejected. This system insures that edits can not take place in the primary system without being concurrently implemented in the secondary system.

摘要翻译： 本发明构成了一种与可编程控制器系统一起使用的数据交付系统，该系统具有主要和次要（或“备用”）系统，每个系统具有冗余硬件组件并且具有与这些组件相关联的数据结构。 本发明还涉及硬件组件的互连和用于提供冗余数据结构的过程的互连，这使得辅助或备份系统能够在主控制系统中发生故障时快速有效地进行控制。 两个系统都通过相同的远程数据链路连接到通用I / O机架，这些I / O机架与受控设备上的感测和输出设备相连。 主系统中的数据结构信息被特别地交叉加载到辅助系统，以便在发生关闭主系统的故障时，辅助系统可以开始执行相同的控制程序，并将相同的数据输入和输出到相同的I / O机架基于主系统的最新数据。 通过在高速通信链路连接的主（备））控制系统中使用专用备份模块来实现数据的交叉加载。 通过使用在主系统和辅助系统之间建立紧密耦合的通信网络的程序实用程序进行通信。 此外，在线编辑分阶段启用，以便当任一控制系统无法正确执行编辑时，它将被拒绝。 该系统确保在主系统中不会发生编辑，而不会在辅助系统中并发实施。