1. Network Connectivity Issues – The device may not be properly connected to the network.
2. Controller Not Reachable – The controller may not be responding to ping requests.
Controller Offline – The controller may be powered off or not properly configured.
Possible Solution:
● Ensure the controller is correctly connected to the LAN network.
● Verify the network configuration of the controller.
● Check if the controller responds to ping requests.
● Add the controller to the software and start the respective service as per the controller.
● Confirm it appears online.