Serial port double-loop network redundant communication method

The invention discloses a serial port double-loop network redundant communication method. The communication method of the ith node in a loop network comprises the steps: receiving data information transmitted by the (i-1) th node, and transmitting the data information to the (i+1) th node; receiving data information sent by the (i+1) th node, and sending the data information to the (i-1) th node,wherein 02, the nodes in the ring network comprise a processor and a serial port transceiver group, and an asynchronous communication mode is adopted between the nodes in the ring network. The methodhas the beneficial effects that the method is applied to any communication scene with low performance requirement, low cost, small number of physical communication interfaces and more nodes; differentstandards are adopted among the nodes, so that looped network communication can be applied to a wider range of hardware platforms; while the availability and robustness of looped network communication are improved, the design