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1. 发明授权

US5943675A Change log historian system for memory shared by multiple workstations 失效
标题翻译：更改由多个工作站共享的内存的日志历史记录系统
公开(公告)号：US5943675A
公开(公告)日：1999-08-24
申请号：US719672
申请日：1996-09-25
申请人： Michael J. Keith , Mohammad S. Khan , Victor J. Griswold , David A. Johnston
发明人： Michael J. Keith , Mohammad S. Khan , Victor J. Griswold , David A. Johnston
IPC分类号： G06F12/08 , G06F17/30
CPC分类号： G06F12/0815 , G06F12/0813 , Y10S707/99952
摘要： A communication-efficient change log historian allows workstations having images of a shared memory to remain correlated to the shared memory. The system comprises one or more workstations connected to a microprocessor-based device which includes a memory device. The memory device includes the shared memory, and also stores a memory change list and a memory change index. The memory change list forms a list of changes which have been made to the information stored in the shared memory area, and the change index is indicative of the location of the most recent entry to the memory change list. The workstations maintain an image of the shared memory area, and store workstation change indexes which are indicative of the most recent entry to the memory change list which has also been implemented to respective images of the shared memory area in the workstations. The workstation regularly compares the workstation change index with the memory change index, thereby permitting the workstation image to be dynamically correlated with the shared memory. Advantageously, the system implements updates only when the contents of the shared memory have changed, and updates only those portions of the shared memory which have changed. The system also allows for the dynamic correlation of the workstation image with the shared memory, and allows the microprocessor-based device to be a passive participant in this process.
摘要翻译：通信高效的更改日志历史记录器允许具有共享存储器的图像的工作站保持与共享存储器相关。该系统包括连接到基于微处理器的设备的一个或多个工作站，其包括存储器设备。存储器件包括共享存储器，并且还存储存储器更改列表和存储器改变索引。存储器更改列表形成对存储在共享存储器区域中的信息的改变的列表，并且改变索引表示最近条目到存储器改变列表的位置。工作站保持共享存储器区域的图像，并且将工作站变更索引存储在工作站中的共享存储器区域的各个图像上，将工作站变更索引存储到存储器更改列表中。工作站定期将工作站变化索引与存储器变化索引进行比较，从而允许工作站映像与共享存储器动态相关。有利地，系统仅在共享存储器的内容已经改变时实现更新，并且仅更新已经改变的共享存储器的那些部分。该系统还允许工作站图像与共享存储器的动态相关性，并且允许基于微处理器的设备在该过程中被动参与者。

2. 发明授权

US5881290A Industrial controller decompiler accommodating an expandable instruction set 失效
标题翻译：工业控制器反编译器容纳可扩展指令集
公开(公告)号：US5881290A
公开(公告)日：1999-03-09
申请号：US762658
申请日：1996-12-09
申请人： Amir S. Ansari , Mohammad S. Khan , Jeffrey W. Brooks
发明人： Amir S. Ansari , Mohammad S. Khan , Jeffrey W. Brooks
IPC分类号： G06F9/44 , G06F9/45 , G06F9/30
CPC分类号： G06F8/48 , G06F8/53
摘要： A decompiler works with a compiler for an industrial controller having a user modifiable instruction table to contain code fragments necessary to compile particular instructions. During compilation, the instructions are replaced with the code fragments. Thus new instructions recognizable by the compiler may be added simply by editing this instruction table. The decompiler identifies a portion of the compiled new instructions by reference to the same instruction table used by the compiler thus maintaining compatibility with the compiler.
摘要翻译：反编译器与具有用户可修改指令表的工业控制器的编译器一起工作，以包含编译特定指令所必需的代码段。在编译期间，指令将被代码片段替代。因此，可以通过编辑该指令表来简单地添加编译器可识别的新指令。反编译器通过引用编译器使用的相同指令表来识别编译的新指令的一部分，从而保持与编译器的兼容性。

3. 发明授权

US6088624A Industrial controller with flexible data structures 失效
标题翻译：具有灵活数据结构的工业控制器
公开(公告)号：US6088624A
公开(公告)日：2000-07-11
申请号：US762223
申请日：1996-12-09
申请人： Mohammad S. Khan , Douglas B. Sumerauer
发明人： Mohammad S. Khan , Douglas B. Sumerauer
IPC分类号： G05B19/42
CPC分类号： G05B19/0423
摘要： An improvement in an industrial controller having a processor with a memory holding an I/O table used for storing inputs and outputs transmitted between the industrial controller and a controlled process, via multiple I/O devices, uses templates associated with each I/O device to define the partitioning of the I/O table for the data. The templates define data types and ordering of data required for the particular I/O device permitting the space in the I/O table to be efficiently and intuitively allocated. The templates also relate physical addresses in the I/O table to program variables used by the control program.
摘要翻译：具有处理器的工业控制器的改进，该处理器具有保存用于存储通过多个I / O设备在工业控制器和受控过程之间传输的输入和输出的I / O表的I / O表，使用与每个I / O设备相关联的模板定义数据的I / O表的分区。这些模板定义了数据类型和特定I / O设备所需数据的顺序，从而能够高效，直观地分配I / O表中的空间。模板还将I / O表中的物理地址与控制程序使用的程序变量相关联。

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