Replacing a faulty Sigma IC-LON in Lonmaker for Windows.

[Product_Support]

Issue

How can a faulty IC-LON or IC3-LON be replaced in LonMaker for Windows without requiring new bindings or additional LNS credits?

Product Line

Satchwell BAS & Sigma

Environment

• LonMaker
• Sigma IC-LON
• Sigma IC3-LON

Cause

When replacing a faulty IC-LON or IC3-LON, the new hardware will have a different Neuron ID than the original device. This typically raises concerns about re-binding and LNS credit usage.

Resolution

LonMaker for Windows includes a Replace Device feature that allows you to substitute a device without affecting existing bindings or consuming additional LNS credits.

Replacement Procedure

1. Install the Replacement IC3-LON

   • Use SDCU to configure the new IC3-LON on the Sigma network.

2. Coldstart the Device

   • The IC3-LON should automatically coldstart and retrieve necessary files from the Sigma server.
   • If it doesn’t, manually initiate a coldstart.

3. Open the LonMaker Project

   • Launch the LM4W project used to engineer and commission the original IC-LON.

4. Select the Device in the Drawing

   • Right-click the IC-LON device (not the function block) and choose “Replace…”.

5. Run the Replace Device Wizard

   • Select “Use existing template” and click Next.
   • Leave the next screen unchanged and click Next.
   • Set the initial state to “Online” and choose “New device values” for Configuration Properties. Click Next.
   • Choose your preferred method for entering the new service pin and click Finish.

6. Commission the New Device

   • When prompted, press the Service Pin on the IC3-LON LonWorks daughter card.
   • The device will be commissioned and all bindings reasserted.

7. Upload Configuration to Sigma Server

   • Ensure the NvConfig.bin file is uploaded to the Sigma Server.
   • This step is critical to retain binding information after future cold starts.