Protocol conversion device between MODBUS industrial field bus and wireless ZIGBEE and method thereof

Abstract

The invention discloses protocol conversion device and method thereof between an MODBUS industrial field bus and a wireless ZIGBEE in the technical field of communication. The device comprises an MODBUS bus interface module, a level conversion drive module and a main control module, wherein the MODBUS bus interface module is connected with the level conversion drive module, and the level conversion drive module is connected with the main control module. In the method, the conversion between an MODBUS bus signal level and the TTL data level of the main control module is realized by the level conversion drive module, and the main control module realizes the conversion between a TTL level data message and a wireless ZIGBEE data message, thereby finishing the conversion between wired MODBUS data and wireless ZIGBEE data. The invention realizes the protocol conversion between the industrial field bus MODBUS and the wireless ZIGBEE, not only meets the requirement of an information layer, but also realizes the wireless extension function of an equipment layer.

Description

Technical field [0001] The present invention relates to a device and method in the field of network technology, in particular to a protocol conversion device and method between MODBUS industrial fieldbus and wireless ZIGBEE. Background technique [0002] The development of industrial fieldbus makes a network interconnection system between field instruments, field instruments and control room equipment, realizing all-digital, two-way, multivariable digital communication. MODBUS communication technology is a field bus technology widely used in industrial control systems to connect data acquisition equipment, controllers and actuators. At present, it mainly uses wired networks for data transmission, and its realization methods are mainly three kinds: 1. MODBUS / TCP; 2. Various media (EIA / TIA-232-E, EIA-422, EIA / TIA-485-A, Asynchronous serial transmission on optical fiber, etc.; 3. MODBUS Plus high-speed token transmission. However, wiring is difficult in many mission industry appli...

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Problems solved by technology

[0005] After searching, it was found that the Chinese patent application number is: 200810139162.8, and the name is: an embedded gateway for WiFi and ZigBee wireless network protocol conversion. This technology provides a protocol conversion and data exchange between a wireless ZigBee network and a wireless WiFi network. means of forwarding, but the technique is to convert between wireless protocols

[0006] So far, no public reports on the conversion device and conversion method literature have been found between the protocols between MODBUS industrial fieldbus and wireless ZIGBEE

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