Ethernet interface converter

Abstract

The present invention relates to an ethernet interface converter. The content is that after a net port receives a TCP / IP data packet, a network controller extracts the data in the TCP / IP data packet, notifies a microcontroller to preserve the data received by the net port to a memorizer, and simultaneously sends the data to a serial port controller, the data is sent to a serial port in a serial communication format, the serial port controller accomplishes the serial data extraction after the serial port receiving the data, and notifies the microcontroller that an effective data is received, the microcontroller preserves the data received by the serial port to the memorizer, simultaneously the data is assembled to be a TCP / IP protocol format to be sent to the network controller, and the network controller converts the data to be network signals to send to the net port. The present invention solves the defaults that the cost of the ethernet interface converter is high, and the ethernet interface converter cannot be matched with a field equipment converter with a serial port and a net port. The present invention has the advantages that the cost is low, the present invention can make a real-time monitoring to the running status of the field equipment, and a computer can perform statistical analysis through the data exchange with the field equipment, thus the efficiency is high.

Description

Technical field [0001] The invention relates to a network device, in particular to an Ethernet interface converter. Background technique [0002] Before the present invention, countless electronic devices communicated with other devices through serial ports. In many cases, the serial port was the only channel for them to communicate with the outside world. For example, thermostats, point-of-sale systems, remote monitors, barcode readers, receipt printers, RFID readers, blood pressure monitors, and many different field devices, from traditional inspection tools to the latest building automation. Generally, the device has only one serial port, resources are limited, and the communication distance of the serial port is only about 10 meters, which cannot realize long-distance data transmission. However, many existing Ethernet interface converters are relatively large devices. For example, a converter has 10 network ports and 10 serial ports. This causes high costs and high prices. On...

AI Technical Summary

Problems solved by technology

Generally, there is only one serial port in the equipment, and the resources are limited, and the communication distance of the serial port is only about 10 meters, so long-distance data transmission cannot be realized.

However, many existing Ethernet interface converters are relatively large devices. For example, a converter has 10 network ports and 10 serial ports, which results in high cost and high price, while the field devices are only relatively large devices. Small application equipment, small amount of data, low price, generally only need a serial port and a network port converter, so generally do not use the accessory equipment whose price is much higher than the qualified one, which determines the Interface converters with multiple network ports and serial ports cannot be used in large quantities on many small field devices

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