PROFIBUS-DP main station communication equipment and microprocessor thereof and data sharing method of ASIC chip

Abstract

The invention relates to the field of automatic control and discloses PROFIBUS-DP 1 type main station communication equipment and a microprocessor thereof and a data sharing method of ASIC chips. The main station communication equipment comprises an embedded microprocessor, a peripheral circuit comprising a nonvolatile memory, an ASIC chip ASPC2, a double port RAM (random access memory) and a static memory, wherein the ASIC chip ASPC2 is connected with a PROFIBUS-DP bus through an RS485 interface circuit; and a complex programmable logic device (CPLD) is connected with the microprocessor, the ASIC chip and the static memory for enabling the microprocessor and the ASIC chip to share the data of the static memory. The ASIC chip is used to guarantee the communication rate; the CPLD is used to enable the microprocessor and the ASIC chip to share the data; the development cost is saved; the performance is high; the cost is low; and the work is stable and reliable.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a PROFIBUS-DP master station communication device based on an embedded microprocessor and an ASIC chip. Background technique [0002] PROFIBUS is an international, open, fieldbus standard that does not depend on equipment manufacturers. It is widely used in manufacturing automation, process industry automation, buildings, transportation, electric power and other fields. Among them, PROFIBUS-DP is a high-speed and low-cost Communication standard, mostly used for communication of distributed I / O in equipment-level control systems. [0003] At present, the application and development of PROFIBUS-DP bus technology in China has been relatively extensive. Although the protocol of PROFIBUS is open, the technology is closed, and the core technology is controlled by a few foreign companies such as Siemens. Therefore, the development of smart devices based on DP bus ...

AI Technical Summary

Problems solved by technology

At present, foreign chip suppliers limit the openness of chip supporting firmware programs and do not sell firmware. Therefore, in this solution, developers need to design hardware interface circuits and write firmware programs and upper-layer software by themselves. The protocols are very familiar, and the development is extremely difficult

At present, there is no domestic manufacturer in the market that has successfully developed a stable and reliable master station product based on this solution.

Images