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Method for communicating among a plurality of programmable logic controllers each having a DMA controller

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06F-013/32
  • G06F-015/16
출원번호 US-0433092 (1989-11-07)
발명자 / 주소
  • Sexton Daniel W. (Charlottesville VA) Lacy Andrew M. (Charlottesville VA)
출원인 / 주소
  • GE Fanuc Automation North America, Inc. (Charlottesville VA 02)
인용정보 피인용 횟수 : 52  인용 특허 : 0

초록

A method is provided for communicating among a plurality of programmable logic controllers (PLC\s) coupled together on a common bus. A master PLC and a plurality of slave PLC\s are coupled to the bus. An attach signal is transmitted by the master PLC to address and select the particular slave PLC to

대표청구항

A method for communicating among a plurality of programmable logic controllers (PLC\s) coupled to a common communications bus, said method comprising the steps of: transmitting from a selected one of a plurality of PLC\s a coded signal for identifying another of the PLC\s to which a message is to be

이 특허를 인용한 특허 (52)

  1. Olson Ronald Wayne ; Cinalli Anthony Joseph ; Spencer Andrew Edward, Apparatus and method for sharing data among a plurality of control devices on a communications network.
  2. Hood, Gavan W.; Kappelhoff, Ralph; Hall, Kenwood H., Automatic user interface generation.
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  16. Groeger, Hans-Detlef; Baumgartner, Robert, Electronic bus control device with a parallel databus and a method for the operation of the bus control device.
  17. Chand, Sujeet; Braint, Stephen C.; Hall, Kenwood H.; Hood, Gavan W.; Baier, John J.; Kalan, Michael D., Enabling transactional mechanisms in an automated controller system.
  18. Tetzlaff David E. ; Warrior Jogesh ; Maalouf Gabriel A., Field instrument with data bus communications protocol.
  19. Atchley Hans B. (Greensboro NC) Ronchetti ; Sr. John J. (Kernersville NC), Fuel dispenser electronics design.
  20. Hood, Gavan W.; Kappelhoff, Ralph; Hall, Kenwood H., Hierarchically structured data model for utilization in industrial automation environments.
  21. Shepard, Rusty; Krivoshein, Ken; Christensen, Dan; Law, Gary; Burr, Kent; Nixon, Mark, Highly versatile process control system controller.
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  26. Chand, Sujeet; Briant, Stephen C.; Hall, Kenwood H.; Hood, Gavan W.; Baier, John J.; Kalan, Michael D., Industrial operator interfaces interacting with higher-level business workflow.
  27. Chand, Sujeet; Briant, Stephen C; Hall, Kenwood H; Hood, Gavan W; Baier, John J; Kalan, Michael D, Industrial operator interfaces interacting with higher-level business workflow.
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  29. Hite,Thomas D.; Barber,Ronald W.; Partridge,Charles W.; Lee,Mark R.; McGrane,William B.; Myer,Aaron L.; Lewno,Mark S., Internet control system and method.
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  32. Hood, Gavan W.; Kappelhoff, Ralph; Hall, Kenwood H., Library that includes modifiable industrial automation objects.
  33. Myer, Aaron; Smith, W. Eric, Method and apparatus for controlling network devices.
  34. Fredriksson Lars-Berno,SEX ITX 51100, Method and arrangement for a module which can be connected to a serial and digital network system.
  35. Ward, Robert D.; Whapham, Robert Michael; Kessler, Joseph P., Method and computer program for device configuration.
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  37. Goh, Cheok-Yan; Hu, Chao-Yu, Method for receiving data over an SDIO interface and device using the same.
  38. Kaneko Yasushi,JPX, Method of processing data in numerically controlled drive unit.
  39. Grimes, James E.; Huntley, Jr., William Marion, Multiple program storage within a programmable logic controller system.
  40. Imai,Norihiro; Okada,Kazunori, Network system.
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  42. Sexton Daniel White, Programmable logic controller computer system with micro field processor and programmable bus interface unit.
  43. Young David W. ; Holt Jeffrey J., System and method for controlling a slave processor.
  44. Partridge,Charles W.; Barber,Ronald W.; Lee,Mark R.; Holub,Douglas R., System and method for multimedia display.
  45. Drebinger, Andreas; Zingraf, Jochen, System including at least one automation unit.
  46. Bade, Paul R.; Kahn, Steven A.; Verven, David M., System, method, and computer program product for high speed DMA-based backplane messaging.
  47. Bade, Paul R.; Kahn, Steven A.; Verven, David M., System, method, and computer program product for high speed backplane messaging.
  48. Farchmin, David W.; Baier, John J.; Kalan, Michael D.; Marquardt, Randall A.; Morse, Richard A.; Briant, Stephen C.; Chand, Sujeet, Systems and methods for automatic visualization configuration.
  49. Bezdicek, Jan; Bumbalek, Ladislav; Hall, Kenwood H.; Slajs, Jakub, Systems and methods for conducting communications among components of multidomain industrial automation system.
  50. Bezdicek, Jan; Bumbalek, Ladislav; Hall, Kenwood H.; Slajs, Jakub, Systems and methods for conducting communications among components of multidomain industrial automation system.
  51. Bezdicek, Jan; Bumbalek, Ladislav; Hall, Kenwood H.; Slajs, Jakub, Systems and methods for conducting communications among components of multidomain industrial automation system.
  52. Hood, Gavan W.; Kappelhoff, Ralph; Hall, Kenwood H., Tracking and tracing across process boundaries in an industrial automation environment.
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