Convert Trane BCU (BMTW or BMTX) from BACnet/Ethernet to BACnet/IP for integrating to a Niagara R2 UNC

[Product_Support]

Issue

Is there a way to convert a Trane BCU (BMTW or BMTX) from BACnet/Ethernet to BACnet/IP for integrating to a Niagara R2 UNC?

Product Line

TAC IA Series

Environment

• Trane BCU (BMTW or BMTX)
• Niagara R2 UNC

Cause

There are two components required to change over the BCU from BACnet/Ethernet to BACnet/IP.

Resolution

1. A special serial cable is required to download the BCU with the new configuration. Below are the pin outs to make the cable:
   
   
    
2. Access to the Tracer Summit software.

Here are the steps for running the BCUconfig.exe program to change over the BCU from Ethernet to IP:

1. Open Windows Explorer and navigate to C:\Program Files\Tracer Summit\Bin
2. Double-click on BCUconfig.exe
3. Enter the information and select download.
   Note - This is where you must have the Trane serial cable.
   The BCU will reset.
4. Now change the Connection type in the Tracer Summit software to IP connection:
   1. Open the Tracer Summit software and select Connect.
   2. The Site connection Wizard will appear. Select the BACnet/IP radio button.
   3. From the Ethernet Configuration window, select the 'open on startup' check box.
   4. Select the 'Use BBMD connection' from the BACnet/IP configuration window.
   5. Specify the IP address of the BBMD BCU and the UDP port which is the BACnet port.
   6. Select Finish.