Method and system for obtaining link node data

A system for obtaining link node data, comprising a memory and one or more processors, wherein the memory stores executable codes, and when executed by the processors, the executable codes cause the processors to:

• after receiving a link fault message, by the master station device, switch to a link disconnected working mode, and determine to transmit a first link location acquisition message to at least one of a first network port or a second network port based on respective on-off states of the first network port and the second network port of the master station device;
• after receiving the first link location acquisition message, by each of the plurality of node devices, process the first link location acquisition message to obtain a second link location acquisition message, and transmit the second link location acquisition message through a first network port or a second network port of the node device;
• after receiving the second link location acquisition message, by the master station device, parse the second link location acquisition message, and determine to transmit a first node data acquisition message to at least one of the first network port or the second network port based on the respective on-off states of the first network port and the second network port of the master station device;
• after receiving the first node data acquisition message, by the node device, process the first node data acquisition message to obtain a second node data acquisition message, and transmit the second node data acquisition message through the first network port or the second network port of the node device;
• and
• after receiving the second node data acquisition message, by the master station device, parse the second node data acquisition message to obtain data of at least one node device in the plurality of node devices.

A computer readable storage medium, storing programs thereon, wherein when executed by one or more processors, the programs cause the processors to:

• after receiving a link fault message, by the master station device, switch to a link disconnected working mode, and determine to transmit a first link location acquisition message to at least one of a first network port or a second network port of the master station device based on respective on-off states of the first network port and the second network port of the master station device;
• after receiving the first link location acquisition message, by each of the plurality of node devices, process the first link location acquisition message to obtain a second link location acquisition message, and transmit the second link location acquisition message through a first network port or a second network port of the node device;
• after receiving the second link location acquisition message, by the master station device, parse the second link location acquisition message, and determine to transmit a first node data acquisition message to at least one of the first network port or the second network port of the master station device based on the respective on-off states of the first network port and the second network port of the master station device;
• after receiving the first node data acquisition message, by the node device, process the first node data acquisition message to obtain a second node data acquisition message, and transmit the second node data acquisition message through the first network port or the second network port of the node device;
• and
• after receiving the second node data acquisition message, by the master station device, parse the second node data acquisition message to obtain data of at least one node device in the plurality of node devices.