Profinet communication protocol conversion card and conversion method

Abstract

The invention discloses a Profinet communication protocol conversion card and a conversion method. The Profinet communication protocol conversion card comprises an MCU, a CPLD chip and a TPS-1 protocol chip, wherein the MCU is respectively connected to the CPLD chip and the TPS-1 protocol chip; the MCU is used for reading a control instruction of a Profinet master station through the TPS-1 protocol chip and writing data into a frequency converter through the CPLD chip after protocol data processing, and acquiring state data of the frequency converter through the CPLD chip, writing the state data into the TPS-1 protocol chip after protocol data processing and sending the state data to the Profinet master station in order to realize data exchange. The Profinet communication protocol conversion card supports a 8/16-bit parallel bus and is compatible with a hardware interface of an existing 8-bit bus, the software development is easy to realize, the number of chip pins is small, the designis simple, and the development period is short.

Description

technical field [0001] The invention relates to the technical field of industrial communication, in particular to a Profinet communication protocol conversion card and a conversion method. Background technique [0002] With the wide application of Ethernet in the industrial field, the application of frequency converter puts forward higher requirements on the real-time performance of communication. As an innovative and open Ethernet, Profinet not only supports standard Ethernet channel, but also supports real-time communication channel (RT) and isochronous real-time communication channel (IRT), which can meet the application occasions with different real-time requirements. [0003] At present, the existing solution can use the Siemens ERTEC200P chip for slave station development, which only supports 16 / 32-bit parallel bus, but does not support 8-bit parallel bus. If the CPU only supports 8-bit parallel bus, the solution cannot be realized. ERTEC200P has a lot of pins, comple...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing solution can use Siemens ERTEC200P chip for slave station development, which only supports 16 / 32-bit parallel bus, but does not support 8-bit parallel bus. If the CPU only supports 8-bit parallel bus, the solution cannot be realized

ERTEC200P has many pins, complex peripheral circuits, complex hardware design and implementation, which will lead to long development cycle and difficult development

Moreover, the source code in the ERTEC200P chip is provided by Siemens, the source code is huge, the software development is very difficult, and the follow-up function realization and program maintenance are also very difficult

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