公开(公告)号：US07124206B2

公开(公告)日：2006-10-17

申请号：US10271921

申请日：2002-10-16

申请人： Steven Michael Hausman

发明人： Steven Michael Hausman

IPC分类号： G06F15/16

CPC分类号： G05B19/054 ,  G05B19/00 ,  G05B19/05 ,  G05B2219/15018 ,  G05B2219/15078 ,  H04M11/06

摘要： At least one exemplary embodiment of the present invention includes a system comprising a first modem integral to a first programmable logic controller, and a second modem integral to a second programmable logic controller, the first modem adapted to communicate with the second modem via a communications network. At least one exemplary embodiment of the present invention includes a method comprising coupling a first modem to a second modem, the first modem integral to a first programmable logic controller, the second modem connected to a second programmable logic controller, and transferring data between the first modem and the second modem. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

公开(公告)号：US20040166842A1

公开(公告)日：2004-08-26

申请号：US10790520

申请日：2004-03-01

发明人： Samuel John Malizia JR.

IPC分类号： H04Q007/20 ,  H04M001/00

CPC分类号： G05B19/054 ,  G05B19/0423 ,  G05B2219/15018 ,  G05B2219/25175 ,  G05B2219/25217 ,  G05B2219/25222

摘要： The invention comprises a modem apparatus adapted to provide full messaging and communications interface between a control device and a communications medium such as a telephone line. The modem can comprise an interface adapted to communicate directly with a control system device, such as a programmable logic controller (PLC), using a communications protocol compatible with the normal network communications used in a distributed control system. The apparatus advantageously interfaces directly with unmodified control system devices, providing the ability to send and receive messages from remote devices or personnel via a communications medium. The invention also comprises a control system including a modem device providing full communications between a control device and remote personnel and/or devices. The apparatus can further be operative to monitor certain control conditions via communications with the control device, and to create and transmit messages across a communications medium according to the monitored control conditions.

摘要翻译： 本发明包括适于在控制设备和诸如电话线路的通信介质之间提供完整消息和通信接口的调制解调器设备。 调制解调器可以包括适于使用与分布式控制系统中使用的普通网络通信兼容的通信协议与诸如可编程逻辑控制器（PLC）的控制系统设备直接通信的接口。 该设备有利地直接与未修改的控制系统设备接口，提供通过通信介质从远程设备或人员发送和接收消息的能力。 本发明还包括一种控制系统，其包括调制解调器装置，其提供控制装置与远程人员和/或装置之间的完整通信。 该装置还可以通过与控制装置的通信来监视某些控制条件，并且根据所监视的控制条件通过通信介质创建和发送消息。

公开(公告)号：US06301509B1

公开(公告)日：2001-10-09

申请号：US09148693

申请日：1998-09-04

申请人： Yoshimori Obata

发明人： Yoshimori Obata

IPC分类号： G05B1101

CPC分类号： G05B19/054 ,  G05B2219/1105 ,  G05B2219/1109 ,  G05B2219/1111 ,  G05B2219/15018 ,  G05B2219/15108 ,  G05B2219/15111

摘要： The invention is aimed at providing a programmable logic control system capable of executing a plurality of functions to realize high-speed data communication between itself and a control input/output unit without degrading the performance of the programmable logic control system, thereby significantly enhancing the performance and simplifying maintenance. To attain the aim, the programmable logic control system comprises a plurality of separate modules obtained by grouping the operating sections and the input/output sections of the controllers in the form of separate modules, and mounted on a back board. On the back board, there is also provided a control input/output unit connector. A signal is used for the control input/output unit connector connected parallel to the separate modules via the back board, so that communication can be performed, during use of a bus, between the separate modules and the control input/output unit.

摘要翻译： 本发明的目的在于提供一种能够执行多个功能以实现其与控制输入/输出单元之间的高速数据通信的可编程逻辑控制系统，而不降低可编程逻辑控制系统的性能，从而显着提高性能 并简化维护。 为了达到目的，可编程逻辑控制系统包括通过以分开的模块的形式对控制器的操作部分和输入/输出部分进行分组并安装在背板上而获得的多个单独的模块。 在背板上还提供了一个控制输入/输出单元连接器。 一个信号用于通过背板并联连接到单独模块的控制输入/输出单元连接器，从而可以在使用总线期间在单独的模块和控制输入/输出单元之间进行通信。

公开(公告)号：US4442504A

公开(公告)日：1984-04-10

申请号：US313365

申请日：1981-10-21

申请人： Ernst H. Dummermuth ,  Daniel J. Galdun ,  Raymond A. Grudowski ,  Daniel L. Stewart

发明人： Ernst H. Dummermuth ,  Daniel J. Galdun ,  Raymond A. Grudowski ,  Daniel L. Stewart

IPC分类号： G05B19/05 ,  G06F13/12 ,  G06F13/22 ,  G06F13/362 ,  G06F7/00 ,  G06F9/30

CPC分类号： G06F13/362 ,  G05B19/052 ,  G06F13/124 ,  G06F13/22 ,  G05B2219/1103 ,  G05B2219/1159 ,  G05B2219/13017 ,  G05B2219/15011 ,  G05B2219/15018 ,  G05B2219/15078

摘要： A programmable controller is formed by connecting separate functional modules to a common backplane bus. A bus arbitration scheme and a message handling technique are disclosed to tightly couple the functional modules together to form an efficient programmable controller. A number of improvements to the CPU module and I/O scanner module are disclosed to further improve the performance of the resulting system.

摘要翻译： 可编程控制器通过将单独的功能模块连接到公共背板总线而形成。 公开了总线仲裁方案和消息处理技术，以将功能模块紧密耦合在一起以形成有效的可编程控制器。 公开了对CPU模块和I / O扫描器模块的许多改进，以进一步提高所得系统的性能。

公开(公告)号：US3997879A

公开(公告)日：1976-12-14

申请号：US644074

申请日：1975-12-24

申请人： Theodore J. Markley ,  Ernst H. Dummermuth ,  William W. Searcy ,  Odo J. Struger

发明人： Theodore J. Markley ,  Ernst H. Dummermuth ,  William W. Searcy ,  Odo J. Struger

IPC分类号： G05B19/05 ,  G06F11/00 ,  G06F11/07 ,  G06F9/06 ,  G06F15/46

CPC分类号： G06F11/0751 ,  G05B19/058 ,  G06F11/0745 ,  G06F11/0772 ,  G06F11/0793 ,  G05B2219/1159 ,  G05B2219/1181 ,  G05B2219/14072 ,  G05B2219/14144 ,  G05B2219/15018 ,  G05B2219/15026 ,  G05B2219/25458

摘要： A programmable controller includes four remotely located input/output interface racks which are connected by cables to an I/O scanner circuit which is centrally located with the controller processor and memory. Input and output data is serially transmitted between the I/O scanner circuit and the interface racks, and fault processors are located in both the I/O scanner circuit and the interface racks to monitor the operation. The fault processors include fault tolerant detector circuits which ignore erroneous transmissions caused by industrial noise, but which initiate a shutdown process when malfunctions occur. The shutdown process is controlled by a programmable disabling circuit which is responsive to program instructions stored in the controller memory to allow independent, quasi-independent, or dependent operation of the machines connected to each of the four interface racks.

摘要翻译： 可编程控制器包括四个远程位置的输入/输出接口机架，它们通过电缆连接到位于控制器处理器和存储器中心的I / O扫描器电路。 输入和输出数据在I / O扫描器电路和接口机架之间串行传输，故障处理器位于I / O扫描仪电路和接口机架中，以监控操作。 故障处理器包括容错检测器电路，其忽略由工业噪声引起的错误传输，但是当发生故障时启动关机过程。 关闭过程由可编程禁用电路控制，该可编程禁止电路响应于存储在控制器存储器中的程序指令，以允许连接到四个接口机架中的每一个的机器的独立，准独立或依赖的操作。

公开(公告)号：US20120320931A1

公开(公告)日：2012-12-20

申请号：US13524505

申请日：2012-06-15

申请人： RAMANUJA VEDANTHAM ,  KUMARAN VIJAYASANKAR ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM

发明人： RAMANUJA VEDANTHAM ,  KUMARAN VIJAYASANKAR ,  ANAND G. DABAK ,  TARKESH PANDE ,  IL HAN KIM

IPC分类号： H04L12/413

CPC分类号： H04L12/413 ,  G05B15/02 ,  G05B19/052 ,  G05B2219/15018

摘要： A method of powerline communications (PLC) in a PLC network having a plurality of nodes including a first node and a second node. A first node receives a PLC signal from the second node. The first node decodes a media access control (MAC) frame of the PLC signal to determine a frame size of the MAC frame. Based on the frame size, dynamic selection of a Response Inter-Frame Space (RIFS) value from at least two candidate RIFS values and a Contention Inter-frame Space (CIFS) value from at least two candidate CIFS values is provided.

摘要翻译： 一种具有包括第一节点和第二节点的多个节点的PLC网络中的电力线通信（PLC）的方法。 第一节点从第二节点接收PLC信号。 第一节点解码PLC信号的媒体访问控制（MAC）帧以确定MAC帧的帧大小。 基于帧大小，提供来自至少两个候选RIFS值的响应帧间空间（RIFS）值和来自至少两个候选CIFS值的竞争帧间空间（CIFS）值的动态选择。

公开(公告)号：US07227939B2

公开(公告)日：2007-06-05

申请号：US10272114

申请日：2002-10-16

申请人： Galen Freemon ,  Temple Fulton

发明人： Galen Freemon ,  Temple Fulton

IPC分类号： H04M3/42

CPC分类号： G05B19/054 ,  G05B19/00 ,  G05B19/05 ,  G05B2219/15018 ,  G05B2219/15078 ,  H04M11/06

摘要： At least one exemplary embodiment of the present invention includes a method comprising receiving a connection request at a modem integral to a programmable logic controller, and allowing access to the programmable logic controller via the modem. At least one exemplary embodiment of the present invention includes a method comprising establishing a connection between a calling device and a modem integral to a programmable logic controller, and allowing the calling device access to the programmable logic controller via the modem. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

摘要翻译： 本发明的至少一个示例性实施例包括一种方法，包括以可编程逻辑控制器的集成的调制解调器接收调制解调器的连接请求，并允许经由调制解调器访问可编程逻辑控制器。 本发明的至少一个示例性实施例包括一种方法，包括建立主叫设备和与可编程逻辑控制器集成的调制解调器之间的连接，并允许主叫设备经由调制解调器访问可编程逻辑控制器。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交本摘要的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

公开(公告)号：US06925158B2

公开(公告)日：2005-08-02

申请号：US10272115

申请日：2002-10-16

申请人： Alan D. McNutt

发明人： Alan D. McNutt

IPC分类号： G05B19/00 ,  G05B19/05 ,  H04L29/06 ,  H04L29/08 ,  H04M11/06 ,  H04M11/00

CPC分类号： G05B19/054 ,  G05B19/00 ,  G05B19/05 ,  G05B2219/15018 ,  G05B2219/15078 ,  H04M11/06

摘要： At least one exemplary embodiment of the present invention includes a system comprising a modem adapted to be integrated into a programmable logic controller and adapted to facilitate communications with a main processor of the programmable logic controller via a communications medium. At least one exemplary embodiment of the present invention includes a method comprising receiving a message from a main processor of a programmable logic controller, modulating the message within the programmable logic controller, and transmitting the message via a communications network. At least one exemplary embodiment of the present invention includes a method comprising receiving a message at a programmable logic controller from a communications network, demodulating the message within the programmable logic controller, and delivering the message to a main processor of the programmable logic controller. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

摘要翻译： 本发明的至少一个示例性实施例包括一种包括调制解调器的系统，其适于被集成到可编程逻辑控制器中并且适于促进经由通信介质与可编程逻辑控制器的主处理器的通信。 本发明的至少一个示例性实施例包括一种方法，包括从可编程逻辑控制器的主处理器接收消息，调制可编程逻辑控制器内的消息，以及经由通信网络发送消息。 本发明的至少一个示例性实施例包括一种方法，包括在可编程逻辑控制器处从通信网络接收消息，对可编程逻辑控制器内的消息进行解调，以及将消息传送到可编程逻辑控制器的主处理器。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交本摘要的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

公开(公告)号：US20030194069A1

公开(公告)日：2003-10-16

申请号：US10272115

申请日：2002-10-16

发明人： Alan D. McNutt

IPC分类号： H04M011/00

CPC分类号： G05B19/054 ,  G05B19/00 ,  G05B19/05 ,  G05B2219/15018 ,  G05B2219/15078 ,  H04M11/06

摘要： At least one exemplary embodiment of the present invention includes a system comprising a modem adapted to be integrated into a programmable logic controller and adapted to facilitate communications with a main processor of the programmable logic controller via a communications medium. At least one exemplary embodiment of the present invention includes a method comprising receiving a message from a main processor of a programmable logic controller, modulating the message within the programmable logic controller, and transmitting the message via a communications network. At least one exemplary embodiment of the present invention includes a method comprising receiving a message at a programmable logic controller from a communications network, demodulating the message within the programmable logic controller, and delivering the message to a main processor of the programmable logic controller. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

摘要翻译： 本发明的至少一个示例性实施例包括一种包括调制解调器的系统，其适于被集成到可编程逻辑控制器中并且适于促进经由通信介质与可编程逻辑控制器的主处理器的通信。 本发明的至少一个示例性实施例包括一种方法，包括从可编程逻辑控制器的主处理器接收消息，调制可编程逻辑控制器内的消息，以及经由通信网络发送消息。 本发明的至少一个示例性实施例包括一种方法，包括在可编程逻辑控制器处从通信网络接收消息，对可编程逻辑控制器内的消息进行解调，以及将消息传送到可编程逻辑控制器的主处理器。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交本摘要的理解是，它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

公开(公告)号：US20030185353A1

公开(公告)日：2003-10-02

申请号：US10272592

申请日：2002-10-16

发明人： Temple Fulton ,  Steven Michael Hausman

IPC分类号： H04M011/00

CPC分类号： G05B19/054 ,  G05B19/00 ,  G05B19/05 ,  G05B2219/15018 ,  G05B2219/15078 ,  H04M11/06

摘要： At least one exemplary embodiment of the present invention includes a method comprising formatting a message at a first modem integral to a first programmable logic controller, and transmitting the formatted message from the first modem via a communications network. At least one exemplary embodiment of the present invention includes a system comprising a means for formatting a message at a modem integral to a programmable logic controller, and means for transmitting the formatted message from the modem via a communications network. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

摘要翻译： 本发明的至少一个示例性实施例包括一种方法，包括以与第一可编程逻辑控制器成一体的第一调制解调器格式化消息，以及经由通信网络从第一调制解调器发送格式化的消息。 本发明的至少一个示例性实施例包括一种系统，该系统包括用于将集成于可编程逻辑控制器的调制解调器上的消息格式化的装置，以及用于经由通信网络从调制解调器发送格式化的消息的装置。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。 提交本摘要的理解是，它不会用于解释或限制权利要求的范围或含义。