Communication management machine having looped network function

Abstract

The invention discloses a communication management machine having a looped network function, which comprises a central processing unit (CPU), an Ethernet communication module, an Ethernet exchange module, a serial port communication module, a storage module and a power supply module, wherein a protocol conversion module is embedded into the CPU, the communication management machine is characterized in that an Ethernet looped network algorithm module and a WEB configuration module are also embedded into the CPU, and the Ethernet exchange module comprises at least two Ethernet interfaces. By an embedded autonomous rapid looped network algorithm, a topologic structure connected with an Ethernet looped network is added, the autonomous looped network algorithm conforms to a spanning tree protocol (STP) and a rapid spanning tree protocol (RSTP), and the communication management machine has the looped network function. The communication management machine is provided with a plurality of scattered communication nodes and is connected with a terminal network by a looped network connection mode, wire arrangement length and communication equipment quantity of an industrial site are obviously reduced, cost is reduced, networking step is also simplified is more flexible, and construction is much convenient. Compared with the traditional star-shaped or tree-shaped topologic structure and the like, the communication reliability is also obviously improved, and the communication management machine can be widely applied to various Electric transformer and distribution automatic systems.

Description

technical field [0001] The invention relates to communication equipment, in particular to a communication management machine with ring network function. Background technique [0002] The communication management machine is an embedded intelligent communication device, which generally includes a CPU, an Ethernet communication module, an Ethernet switching module, a serial communication module, a storage module and a power supply module. It is used to collect and forward all the equipment data of the automation system such as the power transformation and distribution site, and send them to the remote monitoring host through the communication protocol specified by the user and the Ethernet or / and serial communication medium, and at the same time pass the command of the remote monitoring host to each The measurement and control device realizes the remote control and adjustment of the whole site by the monitoring host. Some CPUs are embedded with communication management machine...

AI Technical Summary

Problems solved by technology

However, the networking of a plurality of communication management machines dispersedly installed in corresponding communication nodes adopts such figure 1 The star connection method shown not only has many wires, troublesome wiring, high construction cost and maintenance cost, but also only one line of each communication management machine is connected to the Ethernet switch. Once this line breaks down, the communication management The machine cannot communicate with the monitoring host

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