Protocol conversion module and intelligent circuit breaker of Devicenet and Modbus

A technology of intelligent circuit breaker and protocol conversion, applied in simulators, instruments, computer control and other directions, to achieve the effect of expanding the scope of application, stable and reliable performance, reducing hardware costs and development difficulties

Inactive Publication Date: 2013-06-05
RENMIN ELECTRIC APPLIANCES GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the application of industrial field bus, the RS485 used by the Modbus protocol has a slight advantage in hardware cost and development difficulty, and it is still widely used in China, so it is unrealistic to completely abandon the Modbus bus at this stage

Method used

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  • Protocol conversion module and intelligent circuit breaker of Devicenet and Modbus
  • Protocol conversion module and intelligent circuit breaker of Devicenet and Modbus
  • Protocol conversion module and intelligent circuit breaker of Devicenet and Modbus

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Experimental program
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Effect test

Embodiment 1

[0027] (Embodiment 1, protocol conversion module)

[0028] Figure 1 to Figure 2 A specific implementation of the protocol conversion module in the present invention is shown, wherein figure 1 It is a block diagram of a circuit structure of the protocol conversion module in the present invention, figure 2 Yes figure 1 The main program flow chart of the protocol conversion module shown. The present embodiment is a protocol conversion module of Devicenet and Modbus, comprising CAN bus transceivers, optocouplers, CAN controllers, single-chip microcomputers, Modbus bus transceivers connected in sequence, and address and baud rate setting dials connected with the single-chip microcomputers switch and network status lights.

[0029] The function of this embodiment is exactly the order that the command message of DeviceNet format is converted into Modbus message, then pass to the Modbus equipment of bottom layer; After receiving Modbus order, equipment responds to the response m...

Embodiment 2

[0032] (Embodiment 2, protocol conversion module)

[0033] This embodiment is basically the same as Embodiment 1, except that the indicated indicating unit also includes a liquid crystal display and a debugging button.

Embodiment 3

[0034] (Embodiment 3, intelligent circuit breaker)

[0035] Figure 3 to Figure 5 A specific embodiment of the intelligent circuit breaker in the present invention is shown, wherein image 3 It is a schematic diagram of the three-dimensional structure of the first structure of the intelligent circuit breaker in the present invention, Figure 4 Yes image 3 A schematic diagram of a three-dimensional structure of the protocol conversion module in the smart circuit breaker shown; Figure 5 Yes Figure 4 A schematic diagram of the three-dimensional structure of the protocol conversion module shown when viewed from another angle.

[0036] This embodiment is an intelligent molded case circuit breaker made by the above embodiment 2, see Figure 3 to Figure 5 , including a molded case circuit breaker body 1, a remote action actuator (located inside the upper cover, not shown in the figure) and the protocol conversion module 2 described in Embodiment 1; the molded case circuit bre...

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Abstract

The invention discloses a protocol conversion module and an intelligent circuit breaker of Devicenet and Modbus. The protocol conversion module comprises a controller area network (CAN) bus transceiver, an optocoupler, a CAN controller, a single chip microcomputer, a Modbus bus transceiver, an address and Baud rate setting toggle switch and a network state indicating lamp, wherein the address and Baud rate setting toggle switch and the network state indicating lamp are connected with the single chip microcomputer. The intelligent circuit breaker comprises a moulded case circuit breaker body, a remote movement executing mechanism and the protocol conversion module. The protocol conversion module and the intelligent circuit breaker can enable users to monitor and control Modbus equipment through a Devicenet bus in real time.

Description

technical field [0001] The invention belongs to the technical field of intelligent circuit breakers, and in particular relates to a protocol conversion module between Devicenet and Modbus and an intelligent circuit breaker. Background technique [0002] Devicenet is an open, low-cost, high-performance communication network based on CAN (Controller Area Network) technology developed in the mid-1990s that complies with global industrial standards. It was originally developed and applied by Rockwell Corporation of the United States. [0003] Devicenet has now become the international standard IEC62026-3 "Low-voltage switchgear and control equipment controller device interface", and has been listed as a European standard, and it is also the actual device network standard in Asia and America. In October 2002, DeviceNet was approved as the Chinese national standard GB / T18858.3-2002, and it was implemented on April 1, 2003. [0004] At present, Devicenet technology belongs to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 叶海武佘定辉包志舟李贺明黄章武陈凯
Owner RENMIN ELECTRIC APPLIANCES GROUP
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