Issue
Interfacing with a Trane BCU panel with a 7797-12 ICI
Environment
I/NET Seven Site with 7797-12 ICI and TRANE BCU
Cause
The 7797-12 ICI is a PTP (Point to Point) RS232 BACnet device which can be used to interface with Trane systems using their BCU panel. The BCU panel can be equipped with an optional Ethernet card. However the presence of this card can modify the addressing structure of the Trane device disabling communication with the ICI.
Resolution
The 7797-12 ICI is a PTP (Point to Point) RS232 BACnet device which can be used to interface with Trane systems using their BCU panel. The BCU panel can be equipped with an optional Ethernet card. However the presence of this card can modify the addressing structure of the Trane device disabling communication with the ICI.
To resolve this problem simply remove the Ethernet card from the BCU panel.
If the Ethernet card is required then a alternative interface will have to be utilized.