ENC Application Director shows Error initializing LonNetwork when booting up.

Issue

LON communications not working and error in Application Director:

Error initializing LonNetwork
javax.baja.LonWorks.LonException: Unable to initialize local lon port {Lon1}

Product Line

TAC I/A Series

Environment

G3, ENC, niagara

Cause

Typically this indicates a hardware issue with the neuron in the ENC.

Resolution

Open the platform for the ENC and use the Commissioning Wizard to commission the ENC again and see it if recovers.  If error remains the unit must be replaced.