Simple serial-port communication equipment

Abstract

The invention discloses simple serial-port communication equipment. The simple serial-port communication equipment comprises a computer, a serial-port extended master station, sub-stations and serial-port equipment, wherein the computer is connected with the serial-port extended master station directly through a netting twine or through an exchange network. A plurality of sub-stations are arranged and are serially connected with one another and then are connected with the serial-port extended master station, thereby forming a high-speed bus network. A plurality of sets of serial-port equipment are arranged. The communication ports of more than one serial-port are gathered to one sub-station, thereby forming a low-speed serial-port communication network; and the communication ports are connected with the high-speed bus through the sub-station. The computer respectively expands the plurality of sets of serial-port equipment in one-to-one correspondence, thereby realizing direct communication between the computer and the plurality of sets of serial-port equipment. The simple serial-port communication equipment has advantages of reducing a workload in engineering installation wiring, realizing simple and convenient installation wiring, reducing engineering construction time, realizing no easy error, obtaining high communication rate and high accuracy, greatly reducing wiring cost and realizing convenient laser maintenance.

Description

technical field [0001] The invention relates to a simple serial port communication device, which belongs to the field of serial port communication. Background technique [0002] There are generally two options for the expansion of the mainstream computer serial port communication in the market: the first is to install an expansion card (such as a multi-serial port card) on the motherboard of the computer to expand several serial ports on the motherboard; the second is to use an external The equipment (such as serial port server) virtualizes the network port of the computer into multiple serial ports. These two technologies are similar in the networking mode between the computer and the on-site serial device. Each serial device needs to be directly and separately connected to the computer motherboard or external device (serial server). Manufacturers of this type of serial port expansion equipment include MOXA in Taiwan, Kanghai and Dolphin in mainland China, etc. The product...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a simple serial communication device, which mainly solves the problem of high cost of on-site wiring for the expansion of the existing computer serial communication, inconvenient expansion of the number of serial ports, low rate and correct rate of serial communication, and failure of on-site communication routing to realize self-healing Problems with the ring network structure

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