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。

公开(公告)号：US5287548A

公开(公告)日：1994-02-15

申请号：US161484

申请日：1988-02-29

申请人： Mark A. Flood ,  Michael D. Kalan ,  Charles M. Rischar ,  Robert R. Sepsi ,  Jack F. Toma

发明人： Mark A. Flood ,  Michael D. Kalan ,  Charles M. Rischar ,  Robert R. Sepsi ,  Jack F. Toma

IPC分类号： G05B19/05 ,  G06F9/06 ,  G06F9/30 ,  G06F9/45

CPC分类号： G05B19/056 ,  G05B2219/13118 ,  G05B2219/13144 ,  G05B2219/15059 ,  G05B2219/15127

摘要： A programmable controller governs the operation of a piece of equipment by executing machine language instructions compiled from a ladder diagram type control program. The control program as stored in the controller includes not only compiled machine language instructions, but also a tokenized version of the source code from which certain machine language instructions were compiled. The source code is provided only for those portions of the machine language program which cannot be easily decompiled to produce the corresponding source code. This program storage facilitates subsequent editing of the stored program via a terminal connected to the programmable controller. During the editing process, the original ladder diagram can be reconstructed from a combination of the machine language instructions and the tokenized version of the source code. In doing so, the machine language instructions, which have a one-to-one correspondence with the source code instructions, are decompiled using conventional techniques. However, the tokenized version of the source code is used to recreate the portions of the ladder diagram for which each machine language instruction does not have a unique one-to-one correspondence with a source code instruction. This program storage technique enables the control program to be easily edited using the version stored in the programmable controller without requiring access to the original source code from which the program was compiled.

摘要翻译： 可编程控制器通过执行从梯形图类型控制程序编译的机器语言指令来控制一件设备的操作。 存储在控制器中的控制程序不仅包括编译的机器语言指令，而且包括编译某些机器语言指令的源代码的标记版本。 源代码仅提供给机器语言程序的那些不能轻易地被反编译以产生相应的源代码的部分。 该程序存储便于经由连接到可编程控制器的终端对存储的程序的后续编辑。 在编辑过程中，可以从机器语言指令和源代码的标记版本的组合中重建原始梯形图。 在这样做时，使用常规技术对与源代码指令具有一一对应关系的机器语言指令进行反编译。 然而，源代码的令牌化版本用于重新创建梯形图的部分，其中每个机器语言指令与源代码指令不具有唯一的一一对应关系。 该程序存储技术使得能够使用存储在可编程控制器中的版本容易地编辑控制程序，而不需要访问编译程序的原始源代码。