Lon Communications stop working after changes to the LON network or IC LON controller

[Product_Support]

Issue

• Communications through the IC Lon controller have stopped since having to reset the Lon daughter card
• After making changes to the Lon network controllers IC Lon objects are now displaying default values
• A third party has connected to the Lon network using LON Maker and some objects are now showing default values.

Product Line

Satchwell Sigma

Environment

• FTT-10 Lon SNVT binding
• Sigma IC3 Lon
• LonMaker for Windows v3.1

Cause

The Lon bindings between the IC3 Lon controller and Lon network have been broken

Resolution

Rebind the IC3 Lon SNVTs to the Lon controller SNVTs.

In LonMaker (v3.1) open the original drawing and re-sync the Lon network.  Include the option to re-commission the controllers.

1. Select Menu option 'LonMaker' then 'Resynchronize' 
2. Enable re-commission
   
3. Enable ' Use Reference shapes'
   
4. Complete wizard and re-sync.

Notes:

1. Remember to upload and save the NvConfig file from the Sigma IC3 Lon controller to Sigma server (See Sigma - IC-Lon/IC3-Lon - Communications with other Lon network devices are lost)
2. If IC3 Lon fails to re-commission indicating 'Application-less' then the IC3 Lon daughter card needs resetting (See Sigma Lon card is applicationless and cannot be reset by IC3 LON controller)