Parameter-regulable universal RS232-CAN (Controller Area Network) bus adapter

Abstract

The invention provides a parameter-regulable universal RS232-CAN (Controller Area Network) bus adapter. A 232 interface level switch module is connected with a serial device; a CAN bus transceiver interface module is connected with a CAN bus networking device in a plugging way; a microprocessor reads configuration file information in a data storage module, and sets Baud rate and CAN bus data transmission rate of serial communication, and after the CAN bus transceiver interface module receives data, the data is sent out through the 232 interface level switch module; after the 232 interface level switch module receives the data, the data is transmitted into a CAN bus communication network through the CAN bus transceiver interface module in a message type. According to the parameter-regulable universal RS232-CAN bus adapter, the communication parameters can be modified and set according to the need, the performance is stable, the instantaneity is good, the universality is strong, the setting is simple, the operation is convenient, and the use is more flexible.

Description

technical field [0001] The invention relates to the field of data transmission protocol conversion, in particular to a general RS232-CAN bus adapter with adjustable parameters. Background technique [0002] CAN bus is a serial communication bus that effectively supports distributed control or real-time control. It has the following main characteristics: convenient networking, simple wiring, low cost, high reliability of data transmission, support for long-distance high-speed data transmission and How multi-master works. It can be widely used in the interconnection between process control equipment and measurement and control equipment to meet the needs of high-speed and reliable data transmission and complex applications in real-time measurement and control systems composed of various terminal equipment. [0003] The RS232 bus has a simple common protocol, is easy to use, and can be connected to a standard computer serial port. It has been widely used as a communication int...

AI Technical Summary

Problems solved by technology

However, due to the differences in CAN bus and RS232 bus structures, communication protocols and data networking methods, the two cannot be directly interconnected and communicated. In order to realize the inconvenience of connecting different interface devices, it is first necessary to solve the CAN bus and RS232 bus. convert

[0004] At present, there are some RS232-CAN bus adapters on the market that realize this kind of function, but the communication parameters of most RS232-CAN bus adapters—baud rate and data transmission rate have been solidified in the internal application program of the chip, and users cannot Modifying parameters by yourself cannot meet the complex and changing environment of application requirements, and the versatility and flexibility are poor; some products can use specific upper computer software to configure communication parameters on the PC, but the operation process is relatively complicated, and the price of such equipment Expensive, high cost, not conducive to promotion

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