[Cause]
The local node left the network in FL-net system %d. This may be caused by a power interruption, disconnection, or similar event. A node may also leave the network as a result of an error that has already occurred.
[Countermeasure]
Turn on power to join the network, or check cable and other connections for abnormalities. Check whether error messages were issued at the same time. If an error occurred, eliminate its cause first.