After changing a controller's IP settings, it does not come online and cannot be accessed via its web interface.
The controller can be accessed via its web interface by temporarily defaulting the IP address. Still, changes to its IP settings cannot be saved and are instead met with the following "Invalid Port" errors.
- Invalid Port – Module UDP Port
- Invalid Port – Touch Screen UDP Port
Security Expert Controllers (SP-C, SP-ACX, SP-AC1, SP-C-WEB)
The controller's HTTP Port has been set to 0. If this field is set to no value, this is converted to an invalid 0 value, the controller will no longer be accessible via the web interface and will require defaulting the IP address to connect.
Change the HTTP Port to a valid value. The default HTTP Port is 80, but it should be changed to another available port for increased security.