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A dual-protocol stack dual-network port manufacturing message specification communication system and method

A technology for manufacturing message specifications and communication systems, applied in the field of embedded systems, can solve problems such as heavy workload and unstable communication programs, and achieve the effect of reducing system risks and costs

Active Publication Date: 2018-07-10
西电通用电气自动化有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because all communication programs on the device use the NetX communication interface, the problem brought by this method is that once the communication interface of the new protocol stack is different from the NetX communication interface, we must change the communication interface of all communication program codes. This would be a lot of work and at the same time destabilize already running communication programs

Method used

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  • A dual-protocol stack dual-network port manufacturing message specification communication system and method
  • A dual-protocol stack dual-network port manufacturing message specification communication system and method

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Embodiment 1

[0026] figure 2 Describes the processing details in the MMS3 task. Initialization 1 is to create a listening socket for the LWIP protocol stack 7, which is used to listen to the network connection from the new network port. In MMS message receiving 2, add the LWIP socket receiving function to receive messages. In the socket receiving function, the socket adopts non-blocking mode, and the select function is used to monitor the socket file descriptor to prevent the receiving process from blocking here and affecting another Receive packets from the network port. In message analysis 3, the socket pointer of LWIP is added to the original message receiving structure, and the default value is empty. Any message received by the NetX socket will not be assigned a value. If the message received by the LWIP socket Then assign the pointer of the receiving socket to this variable. If this variable is empty, it must be the data received by the NetX socket. If it is not empty, it is the da...

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Abstract

The invention discloses a dual-protocol stack dual-network port manufacturing message specification communication system and method, including a first network port, a second network port, a NetX protocol stack, an LWIP protocol stack, a first socket, a second socket and MMS; The first network port is connected with the NetX protocol stack, the NetX protocol stack is connected with the MMS through the first socket, the second network port is connected with the LWIP protocol stack, and the LWIP protocol stack is connected with the MMS through the second socket. The invention can realize the communication of dual protocol stacks and dual network ports.

Description

technical field [0001] The invention belongs to the technical field of embedded systems, and relates to a communication system, in particular to a dual-protocol stack and dual-network port manufacturing message specification communication system and method. Background technique [0002] The MMS (Manufacturing Message Specification) protocol is the implementation protocol of IEC61850 in the station control layer in the smart substation. SISCO's MMS-EASE Lite (Embedded ApplicationService Element) is the C language programming interface of MMS. It is an optimized source code package that supports MMS and IEC61850, and is widely used in the field of relay protection in China. Using it can reduce development risk and development cost, and shorten the time to market. [0003] With the vigorous promotion of the domestic smart grid, the field application requires the protection device to support MMS communication with independent dual network ports. Due to historical reasons, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/10
Inventor 马少帅尚江龙郭守刚葛阳单丁兰靖
Owner 西电通用电气自动化有限公司