A communication protocol conversion card
A communication protocol and conversion card technology, which is applied in the field of communication protocol conversion card, can solve the problems of heterogeneous network operation and information exchange, large volume, complex structure, etc.
Active Publication Date: 2020-06-30
SHENZHEN INVT ELECTRIC
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Problems solved by technology
[0002] In the existing technology, devices usually need to follow some specific protocols during data transmission. Many devices in industrial sites use different communication interfaces. Due to the incompatibility of the protocols of various communication structures, heterogeneous networks Difficult to operate and exchange information
Based on this, a communication protocol conversion card emerges as the times require, but the communication protocol conversion card in the prior art is usually complex in structure, large in size and high in cost
Method used
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[0027] The core of the present invention is to provide a communication protocol conversion card. On the one hand, the number of chips is small, the circuit is simple, the volume is small and the cost is low. In addition, CPLD is used as the data channel, and a variety of communication protocols can be developed on this basis. Good and flexible.
[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present inventio...
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The invention discloses a communication protocol conversion card comprising a driving circuit used for converting a first protocol data frame sent by a first communication device into a first protocol data frame that can be identified by an MCU, wherein the driving circuit is further used for converting a second protocol data frame sent by the MCU into a second protocol data frame that can be identified by the first communication device; the MCU used for analyzing the first protocol data frame to obtain analysis data and sending the analysis data to an Mail OUT address of a CPLD, wherein the MCU is further used for reading data from Mail in of the CPLD, packaging the data into the second protocol data frame and sending the second protocol data frame to the driving circuit; and the CPLD used for notifying a second communication device to analyze the data when receiving the analysis data in the Mail OUT address, wherein the CPLD is further used for storing the data sent by the second communication device in the Mail in address, and notifying the MCU to read the data. The communication protocol conversion card disclosed by the invention has the advantages of small number of chips, simple circuit, small volume, low cost, good versatility and high flexibility.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a communication protocol conversion card. Background technique [0002] In the existing technology, devices usually need to follow some specific protocols during data transmission. Many devices in industrial sites use different communication interfaces. Due to the incompatibility of the protocols of various communication structures, heterogeneous networks It is difficult to carry out operation and information exchange. Based on this, a communication protocol conversion card emerges as the times require. However, the communication protocol conversion card in the prior art is usually complex in structure, large in size and high in cost. [0003] Therefore, how to provide a communication protocol conversion card that solves the above-mentioned technical problems is a problem that those skilled in the art need to solve at present. Contents of the invention [0004] The purp...
Claims
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IPC IPC(8): H04L29/06
CPCH04L69/08H04L69/22
Inventor 王晓娜
Owner SHENZHEN INVT ELECTRIC