Device for controlling point-to-point communication between a module and a transmission bus

A technology of point-to-point communication and transmission bus, which is applied in the direction of program control, electrical program control and instruments in the sequence/logic controller to achieve the effect of compensating costs

Active Publication Date: 2009-01-07
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dimensioning shows that traditional multi-drop / multi-connector line technology is not suitable for this "low power" technology

Method used

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  • Device for controlling point-to-point communication between a module and a transmission bus
  • Device for controlling point-to-point communication between a module and a transmission bus

Examples

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Embodiment Construction

[0043] Refer to attached figure 2 , the programmable controller type combined (modular) automatic control equipment shows the fixed part of the base plate type including the base plate printed circuit 20, and several modules 10 such as I / O modules can be arbitrarily connected to the base plate printed circuit 20 Or disconnect from the printed circuit 20 on the backplane. This printed circuit 20 carries a multipoint transmission bus 22 which serves the different positions of the modules of the automatic control device.

[0044] The backplane circuitry 20 includes a plurality of connection elements 21 of the backplane connector or pin type, each connection element 21 being intended to receive the module 10 when the module 10 is inserted into a position on the automation equipment rack (supplementary connection elements 21 connector or pin type) corresponding to the connector 11. Once inserted, the electrical link between the connection element 21 and the connector 11 of the m...

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Abstract

The invention relates to a device for controlling point-to-point communication between a module (10) and a transmission bus (22), the device comprising a printed circuit (20) which carries the transmission bus (22) and which comprises a connection element (21) intended to connect the module (10) to the transmission bus (22). The printed circuit (20) comprises a communication control unit (23) disposed between the transmission bus (22) and the connection element (21), the said unit (23) comprising unidirectional communication logic gates (24E, 24R), and comprises a logic control circuit (30) for the said logic gates (24E, 24R). The invention can be applied to programmable controllers.

Description

technical field [0001] The invention relates to a device for point-to-point communication between a control module and a transmission bus. The invention finds a particularly beneficial application in the field of programmable controllers. Background technique [0002] A programmable controller or programmable logic controller ("PLC") is an automatic control device capable of driving, controlling and / or monitoring one or more processes, particularly in the field of industrial control assembly, construction or electrical distribution installations. [0003] Generally speaking, in terms of combined design, PLC programmable controllers are composed of different modules that communicate with each other through a transmission bus called a "backplane" bus. The modules are mechanically mounted on a rack, which includes printed circuitry, which supports both the backplane bus and connecting elements intended to cooperate with connectors, usually located on the rear part of the modul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05
CPCG06F13/4068
Inventor 让-雅克·阿德拉格纳帕斯卡尔·查皮尔阿兰·穆尔雷
Owner SCHNEIDER ELECTRIC IND SAS
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