Field bus communication adapter with configurable characteristic

Abstract

The invention relates to a field bus communication adaptor with configurable character, which comprises: a DeviceNet interface, a CAN bus transceiver, a MCU, an optical coupling insulation circuit, a RS48 bus transceiver, a RS232 interface chip, a power switch and protection circuit, an EEPROM, a dial switch, a DC-DC power insulation circuit, a serial indicator light, an adapter module indicator light, and a network indicator light. Wherein, it stores in main CPU auto baud rate upload / download process, main program process, configuration program process, running program process, algorithm program process to search CLASS ID and ATTRIBUTE ID, search program process for DeviceNet-Modbus mapping relation, and serial ISR process. This invention has super performance.

Description

technical field [0001] The present invention relates to a field bus device communication adapter with configurable characteristics, more precisely a communication adapter for protocol conversion between (Modbus) protocol and (DeviceNet) protocol. Background technique [0002] With the development of science and technology, a (DeviceNet) bus technology has been developed, which is changing the appearance of some fields. [0003] The DeviceNet bus technology adopts the data bus, and the master station only needs to lead out two or a few lines to connect various field devices to provide configuration, monitoring and diagnosis functions for the devices. [0004] The development of bus technology has brought great impact to low-voltage electrical products, but due to the diversity of (DeviceNet) network data and the flexibility of exchange, (DeviceNet) network does not have a complete and integrated protocol chip, and the development cycle of DeviceNet interface is relatively lon...

AI Technical Summary

Problems solved by technology

[0005] For DeviceNet communication adapters, at present, (DeviceNet) adapters at home and abroad can only send certain fixed data packets of the device to the master station, which is very poor in flexibility and practicability

Traditional adapters generally can only be connected to a certain fixed device. For the same type of device, the communication protocols on the serial port side are different due to different manufacturers. Moreover, for devices with the same communication protocol, each manufacturer provides The parameters and properties are also different, so it can only be a communication adapter with a fixed device. When the device changes slightly or is not the same type of device, you can only modify the software of the adapter and reprogram the chip. It is a big obstacle in terms of the promotion of technology

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