A Programmable Dual Fieldbus Conversion Interface and Method
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A technology of field bus and conversion method, which is applied in the direction of bus network, program control, data exchange through path configuration, etc., can solve uneconomical problems, and achieve the effect of heterogeneous network interconnection
Active Publication Date: 2019-10-08
WUHAN UNIV OF TECH
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Problems solved by technology
If equipment A and equipment B want to communicate with each other, there needs to be a bus conversion device between equipment A and B; if another equipment C needs to communicate with the above-mentioned equipment A and B, then equipment C must implement these two fieldbuses. technology, and device C (generally most of them) generally has its own serial port or network port communication interface, and device C needs to be redesigned and developed to realize communication with devices A and B, which makes the application of device C limited. sex, and uneconomical
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Embodiment 1
[0090] Such as figure 1 As shown, a programmable dual-field bus conversion interface includes: a controller 1, and an NCUC bus communication module 2 connected to the controller 1, a Profibus-DP bus communication module 3, a serial communication module 4, and a network communication module 5 and a device selection switch module 6; the controller 1 in this embodiment is a STM32F103RET6 microcontroller 1.
[0091] The controller 1 includes a first communication control module for controlling the two-way communication between the NCUC bus communication module 2 and the serial port communication module 4; a second communication control module for controlling the communication between the NCUC bus communication module 2 and the network port communication module 5 Two-way communication between; the third communication control module, used to control the two-way communication between the Profibus-DP bus communication module 3 and the serial port communication module 4; the fourth com...
Embodiment 2
[0108] This embodiment utilizes the method for performing programmable dual-field bus conversion through the interface as described in Embodiment 1:
[0109] Step S1, setting system parameters and initializing each communication module;
[0110] Step S2, the device selection switch module 6 obtains a key selection signal input by the user;
[0111] Step S3, judge whether the user selects any one of the five switches of the equipment selection switch module 6, if so, then enter step S4, if not, then return to step S2;
[0112] Step S4, judging that the switch selected by the user is the first switch Key1, the second switch Key2, the third switch Key3, the fourth switch Key4 or the fifth switch Key5;
[0113] If the first switch Key1 is selected, then start the first communication control module to control the two-way communication between the NCUC bus communication module 2 and the serial port communication module 4;
[0114] If the second switch Key2 is selected, then start ...
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Abstract
The invention discloses a programmable double fieldbus conversion interface and a method. An NCUC and Profibus-DP fieldbus conversion interface device is supported. Meanwhile, connected serial port communication equipment or internet access communication equipment can be in reliable communication with equipment supporting the NCUC or Profibus-DP fieldbus through the interface conversion device, and heterogeneous network interconnection is achieved. An STM32F103RET6 microcontroller is adopted and is a 32-bit high-performance microcontroller, a specialized Profibus-DP protocol chip is adopted, communication between user data and the Profibus-DP bus is achieved, and the processing speed is higher. The function of connecting the serial port equipment and the internet access equipment into the NCUC fieldbus and the Profibus-DP fieldbus for communication is achieved. The advantages of being high in processing speed, high in flexibility, reliable in communication and the like are achieved, the design complexity of an industrial field NCUC and Profibus-DP slave station can be reduced, the technical threshold of using the NCUC and the Profibus-DP for a user can be lowered, the development cost can be reduced, and product integration and fast product development are promoted.
Description
technical field [0001] The invention belongs to the technical field of field bus, and in particular relates to a programmable double field bus conversion interface and method. Background technique [0002] The emergence of fieldbus plays a very important role in the development of industry and has a very important impact on the growth of national economy. At present, there are more than 40 kinds of fieldbuses with different characteristics in the world. These fieldbuses realize multi-point digital communication between field automation equipment, and also realize information exchange between equipment and the outside world. In the domestic market, Profibus-DP and NCUC are two representative bus protocols. It is of great significance to study fieldbus technology and develop interface devices that support multiple fieldbus conversions. [0003] At present, the design based on the fieldbus conversion interface mainly includes the following types: conversion of serial port equ...
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