Programmable controller with programmable I/O scan rate
    1.
    发明授权
    Programmable controller with programmable I/O scan rate 失效
    具有可编程I / O扫描速率的可编程控制器

    公开(公告)号:US4172289A

    公开(公告)日:1979-10-23

    申请号:US839628

    申请日:1977-10-05

    摘要: A programmable controller sequentially executes a control program at a basic "scan rate" determined by the length of the program and the speed at which the controller processor executes the instructions therein. At the completion of each scan through the control program an I/O scan is performed which inputs the status of all sensing devices to the controller image table and outputs status data from the image table to operating devices. The present invention enables the status of selected sensing devices to be inputted and acted upon at any point during the scan through the control program and it enables the output of the processor logic unit to be coupled to a selected operating device at any point. The rate at which selected I/O devices can be scanned by the controller is thus programmable and may be much higher than the basic scan rate of the controller.

    摘要翻译: 可编程控制器以由程序的长度和控制器处理器在其中执行指令的速度确定的基本“扫描速率”顺序地执行控制程序。 在通过控制程序的每次扫描完成后,执行I / O扫描,其将所有感测装置的状态输入到控制器图像表,并将状态数据从图像表输出到操作装置。 本发明使得所选择的感测装置的状态能够在通过控制程序进行的扫描期间的任何点被输入和作用,并且使得处理器逻辑单元的输出能够在任何点耦合到选定的操作装置。 选择的I / O设备可以由控制器扫描的速率是可编程的,并且可能远高于控制器的基本扫描速率。

    Contact histogram for programmable controller
    2.
    发明授权
    Contact histogram for programmable controller 失效
    可编程控制器的接触直方图

    公开(公告)号:US4070702A

    公开(公告)日:1978-01-24

    申请号:US671020

    申请日:1976-03-26

    IPC分类号: G05B19/05 G06F11/00

    摘要: A controller programmer connects to a programmable controller and serves as a means for loading and editing the control program. When the contact histogram mode of operation is employed the logic state of a selected I/O device connected to the controller is monitored, and each time its status changes, its present status is recorded along with the time interval between status changes. A first embodiment is described in which the invention is employed in a hardwired controller program loader and a second embodiment is described in which the controller program loader employs a programmed microprocessor. In the first embodiment the status changes are recorded on paper tape and in the second embodiment they are recorded on a cathode ray tube screen.

    摘要翻译: 控制器编程器连接到可编程控制器,并用作加载和编辑控制程序的手段。 当使用联系直方图操作模式时,监视连接到控制器的所选I / O设备的逻辑状态,并且每当其状态改变时,其当前状态与状态改变之间的时间间隔一起被记录。 描述了本发明在硬连线控制器程序加载器中采用的第一实施例,并且描述了第二实施例,其中控制器程序加载器使用编程的微处理器。 在第一实施例中,状态改变被记录在纸带上,并且在第二实施例中它们被记录在阴极射线管屏幕上。

    Programmable controller with limit detection
    3.
    发明授权
    Programmable controller with limit detection 失效
    具有限位检测功能的可编程控制器

    公开(公告)号:US4158226A

    公开(公告)日:1979-06-12

    申请号:US853721

    申请日:1977-11-21

    摘要: A programmable controller for sensing the status of sensing devices and controlling the state of operating devices in accordance with a stored program includes a position encoder input module which receives position data. In response to instructions in the stored program, the position data from the input module is compared with an upper and a lower limit stored in the controller memory, and if the data lies outside the limits, the controller logic unit is forced to a false decision.

    摘要翻译: 用于感测感测装置的状态并根据存储的程序控制操作装置的状态的可编程控制器包括一个接收位置数据的位置编码器输入模块。 响应于所存储的程序中的指令,将来自输入模块的位置数据与存储在控制器存储器中的上限和下限进行比较,并且如果数据位于限制之外,则控制器逻辑单元被迫进行错误判定 。

    Video computer terminal with detachable intelligent keyboard module
    4.
    发明授权
    Video computer terminal with detachable intelligent keyboard module 失效
    视频电脑终端带可拆卸智能键盘模块

    公开(公告)号:US4527250A

    公开(公告)日:1985-07-02

    申请号:US490740

    申请日:1983-05-09

    IPC分类号: G06F3/02 G06F3/023 G06F3/153

    摘要: An interchangeable keyboard application module is connected to a video monitor module in a computer terminal to provide sequences of processor instructions and a keyboard for performing a plurality of selectable applications. The video monitor module includes a CRT display, a serial I/O interface and a processor that processes characters received through the serial I/O interface for display on the CRT screen whether or not the application module is attached. The processor in the video monitor module detects the connection of the application module, and then selects its instructions from a memory in the application module first, to prompt the selection of a mode of operation for the terminal, and second to execute the selected mode of operation. The application module uses a plurality of keyboard overlays, each corresponding to a respective mode of operation. In a specific embodiment two of the modes of operation are programming applications related to programmable controllers.

    摘要翻译: 可互换键盘应用模块连接到计算机终端中的视频监视器模块,以提供处理器指令序列和用于执行多个可选应用的键盘。 视频监视器模块包括CRT显示器,串行I / O接口和处理器,其处理通过串行I / O接口接收的字符,以便在CRT屏幕上显示是否附加应用模块。 视频监视器模块中的处理器检测应用模块的连接,然后首先从应用模块中的存储器中选择其指令,以提示选择终端的操作模式,然后再次执行所选择的模式 操作。 应用模块使用多个键盘覆盖,每个对应于相应的操作模式。 在具体实施例中,两种操作模式是与可编程控制器相关的编程应用。

    Program loader for programmable controller
    5.
    发明授权
    Program loader for programmable controller 失效
    可编程控制器的程序加载程序

    公开(公告)号:US4200915A

    公开(公告)日:1980-04-29

    申请号:US893252

    申请日:1978-04-05

    IPC分类号: G05B19/05 G06F9/00

    摘要: A microprocessor based program loader is connected to the memory data bus and memory address bus of a programmable controller. The program loader is responsive to commands entered through a keyboard to load and edit the programmable controller control program. A mode switch associated with the programmable controller provides a number of selectable positions which determine the mode of operation of the programmable controller and the functions that can be performed by the program loader. One of the positions on this mode switch enables the program loader through a control line to assume control of the mode selection. The operator can thus control the mode of operation through the program loader keyboard which may be located remotely from the programmable controller.

    摘要翻译: 基于微处理器的程序加载器连接到可编程控制器的存储器数据总线和存储器地址总线。 程序加载器响应于通过键盘输入的命令来加载和编辑可编程控制器控制程序。 与可编程控制器相关联的模式切换器提供多个可选择的位置,这些位置决定了可编程控制器的操作模式以及可由程序加载器执行的功能。 该模式开关中的一个位置使程序加载器能够通过控制线来控制模式选择。 因此,操作者可以通过程序加载器键盘来控制操作模式,该程序加载器键盘可以远离可编程控制器。

    Distributed processing in a cluster of industrial controls linked by a
communications network
    6.
    发明授权
    Distributed processing in a cluster of industrial controls linked by a communications network 失效
    分布式处理在通过通信网络连接的工业控制的集群

    公开(公告)号:US4888726A

    公开(公告)日:1989-12-19

    申请号:US41208

    申请日:1987-04-22

    摘要: A cluster of control processors are interconnected by a local area network and exchange data to carry out their control functions. Each controller executes a control program containing both conventional instructions and T-instructions which call for an operation on data maintained by another controller in the cluster. All data required to execute T-instructions is stored in a virtual I/O image table and each controller is responsible for keeping its section of this table up-to-date by periodically broadcasting its data on the local area network.

    摘要翻译: 控制处理器的簇是通过局域网和交换数据互连以执行其控制功能。 每个控制器执行包含常规指令和T-指令要求对由集群中的另一控制器保持的数据的操作的控制程序。 执行T指令所需的所有数据都存储在虚拟I / O映像表中,每个控制器负责通过在局域网周期性地广播其数据来保持其表的最新部分。

    Input circuit for digital control systems
    7.
    发明授权
    Input circuit for digital control systems 失效
    数字控制系统的输入电路

    公开(公告)号:US4275307A

    公开(公告)日:1981-06-23

    申请号:US38506

    申请日:1979-05-14

    CPC分类号: H03K17/94 H03K17/7955

    摘要: An input circuit for a digital control system includes a rectifier circuit, a current limiting circuit and a set of zener diodes which can be selectively employed to receive a wide variety of signals from industrial sensing devices. The signal is generated to an output drive circuit by an optocoupler which provides electrical isolation. The output drive circuit generates a logic level signal which is compatible with the digital electronic control system. The input circuit is particularly well suited for fabrication as an integrated circuit.

    摘要翻译: 用于数字控制系统的输入电路包括整流器电路,限流电路和一组齐纳二极管,其可以选择性地用于从工业感测装置接收各种各样的信号。 该信号由提供电隔离的光耦合器产生到输出驱动电路。 输出驱动电路产生与数字电子控制系统兼容的逻辑电平信号。 输入电路特别适合作为集成电路的制造。

    Method and apparatus for exchanging multiple data bytes with an I/O
module in a single scan.
    9.
    发明授权
    Method and apparatus for exchanging multiple data bytes with an I/O module in a single scan. 失效
    用于在单次扫描中与I / O模块交换多个数据字节的方法和装置。

    公开(公告)号:US4691296A

    公开(公告)日:1987-09-01

    申请号:US672457

    申请日:1984-11-16

    申请人: Odo J. Struger

    发明人: Odo J. Struger

    IPC分类号: G05B19/05 G05B11/01

    CPC分类号: G05B19/054

    摘要: In a programmable controller, addresses for a group of input/output modules are decoded to generate an enable signal to each respective module. To increase the density of I/O circuits per module without increasing the width of the data bus, the I/O modules are provided with enabling circuits that are responsive to a pair of associated enabling signals in one method of I/O scanning and responsive to an enabling signal and two or more byte addresses received in another method of I/O scanning. Circuit paths have been added on a backplane circuit board to allow each enable signal to be coupled to a pair of I/O modules in the first method of I/O scanning. In the second method of I/O scanning, the hardware for carrying out the first method is disabled and byte addresses are used to couple multiple bytes of I/O status to each I/O module.

    摘要翻译: 在可编程控制器中,对一组输入/输出模块的地址进行解码,以产生每个相应模块的使能信号。 为了增加每个模块的I / O电路的密度,而不增加数据总线的宽度,I / O模块提供了使能电路,其响应一对相关的使能信号,采用一种I / O扫描方式和响应 到使能信号和在另一种I / O扫描方法中接收的两个或更多个字节地址。 在背板电路板上添加了电路路径,以便在第一种I / O扫描方法中使每个使能信号耦合到一对I / O模块。 在第二种I / O扫描方法中,执行第一种方法的硬件被禁用,字节地址用于将多个字节的I / O状态耦合到每个I / O模块。

    Communications network for programmable controllers
    10.
    发明授权
    Communications network for programmable controllers 失效
    可编程控制器的通信网络

    公开(公告)号:US4477882A

    公开(公告)日:1984-10-16

    申请号:US352014

    申请日:1982-02-24

    IPC分类号: G05B19/05 G06F3/00 G06F15/16

    CPC分类号: G05B19/052

    摘要: Programmable controllers are connected in a ring by serial data links. Each controller periodically transmits information packets on the ring which contain its I/O image table data. All controllers on the ring receive such data and store it in their data tables, and such data is thus available for examination by each controller processor during its execution of the user's control program.

    摘要翻译: 可编程控制器通过串行数据链路以环形方式连接。 每个控制器周期性地在环上发送包含其I / O映像表数据的信息包。 环上的所有控制器接收这样的数据并将其存储在其数据表中,并且这样的数据因此可用于每个控制器处理器在其执行用户的控制程序期间进行检查。