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Protocol conversion module and intelligent circuit breaker of Profibus and Modbus

A smart circuit breaker and protocol conversion technology, applied in simulators, instruments, computer control, etc., can solve the problems of few nodes that can be connected to a single bus, poor real-time performance of the system, and high maintenance costs in the later period, so as to reduce hardware costs and develop Effects of difficulty, rational simplification of structure, and expansion of scope of application

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

[0003] Compared with Profibus, the Modbus bus itself has many limitations, mainly reflected in low efficiency, poor real-time performance of the system, low reliability of communication, high post-maintenance cost, complex network engineering debugging, unsatisfactory transmission distance, single bus can be connected Few connected nodes, inflexible applications, etc.
[0004] 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 Profibus and Modbus
  • Protocol conversion module and intelligent circuit breaker of Profibus and Modbus
  • Protocol conversion module and intelligent circuit breaker of Profibus and Modbus

Examples

Experimental program
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Embodiment 1

[0030] (Embodiment 1, protocol conversion module)

[0031] Figure 1 to Figure 7 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 A schematic circuit diagram of the protocol conversion module shown, image 3 yes figure 1 Another circuit schematic diagram of the shown protocol conversion module; Figure 4 yes figure 1 The main program flow chart of the protocol conversion module shown; Figure 5 yes figure 1 The initialization program flowchart of the protocol conversion module shown; Figure 6 yes figure 1 The flow chart of the input data interrupt service program of the shown protocol conversion module; Figure 7 yes figure 1 The flow chart of the SPC3 interrupt service program of the protocol conversion module shown.

[0032] The present embodiment is a kind of protocol conve...

Embodiment 2

[0052] (Embodiment 2, protocol conversion module)

[0053] 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

[0054] (Embodiment 3, intelligent circuit breaker)

[0055] Figure 8 to Figure 10 A specific embodiment of the intelligent circuit breaker in the present invention is shown, wherein Figure 8 It is a schematic diagram of the three-dimensional structure of the first structure of the intelligent circuit breaker in the present invention, Figure 9 yes Figure 8 A schematic diagram of a three-dimensional structure of the protocol conversion module in the smart circuit breaker shown; Figure 10 yes Figure 9 A schematic diagram of the three-dimensional structure of the protocol conversion module shown when viewed from another angle.

[0056] This embodiment is an intelligent molded case circuit breaker made by the above embodiment 2, see Figure 8 to Figure 10 , 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 circui...

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Abstract

The invention discloses a protocol conversion module and an intelligent circuit breaker of Profibus and Modbus. The protocol conversion module comprises a microprogrammed control unit (MCU) central processing unit, a static random access memory (SRAM) storage unit, a toggle switch, a Modbus communication interface, an indicating unit, a PROFIUBS interface chip, an isolation type RS485 sending-receiving chip and a Profibus communication interface, wherein the SRAM storage unit, the toggle switch, the Modbus communication interface, the indicating unit and the PROFIUBS interface chip are connected with the MCU central processing unit, and the isolation type RS485 sending-receiving chip and the Profibus communication interface are connected with the PROFIUBS interface chip in sequence. 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 Profibus 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 Profibus and Modbus and an intelligent circuit breaker. Background technique [0002] PROFIBUS is the abbreviation of process field bus, which officially became the international standard of field bus in 1989. At present, it occupies a dominant position in various automation fields. It consists of three compatible parts, namely PROFIBUS-DP (Decentralized Periphery), PROFIBUS-PA (Process Automation), and PROFIBUS-FMS (Fieldbus Message Specification). Among them, PROFIBUS-DP is used at the field level. It is a high-speed and low-cost communication used for communication between device-level control systems and distributed I / Os; PROFIBUS-PA is suitable for process automation, which enables sensors and actuators to connect to each other. On a shared bus, it can be applied to the field of intrinsic safety; PROFIBUS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 叶海武包志舟佘定辉黄章武陈凯
Owner RENMIN ELECTRIC APPLIANCES GROUP
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