This phenomenon does exist: when a Zigbee network is successfullyestablished, the Coordinator creates this network. Since the Router hasthe ability to maintain a local network, if the Coordinator and Router in anetwork are both online, if the PorID of the Coordinator is reset. Andrestart the Coordinator, the Coordinator's PAN ID will be automaticallyincremented by 1. Because the Coordinator scans a network with thesame PANID, in order to avoid PAN ID conflict, the Coordinator adds 1 toits own PANID and recreates a network.

Solution:

1. Do not change the PAN ID of the Coordinator, but just change thePAN ID of the Router or End Device and let the Router or End Device jointhe network created by the Coordinator.
2. If the above phenomenon has occurred, power off the node other thanthe Coordinator in the network, reset the PAN ID of the Coordinator,restart, and power on the other nodes.
3. Alternatively, change the PAN ID of the other nodes in the network tothe new PAN ID (plus 1 PAN ID, or PAN ID to FF FF), and let other nodesrejoin the network.