Will changing the IP address of a BACnet/IP controller affect communication between BACnet objects on an established network?

Issue

Will changing the IP address of a BACnet/IP controller affect communication between BACnet objects on an established network?

Product Line

TAC I/A Series

Environment

Niagara R2 and G3, UNC-520, ENC-520, WorkPlace Tech Commissioning Tool, MNB-1000

Cause

Niagara R2 and G3, UNC-520, ENC-520, WorkPlace Tech Commissioning Tool, MNB-1000

Resolution

BACnet communicates using the BACnet device’s instance number, so changing the IP address of the controllers will not affects the communications between BACnet points. The BACnet/IP controller's MAC Address is comprised of its IP address and port number. This BACnet/IP Controller’s MAC address will automatically updated whenever one of the following tree procedures are performed, a “whoIs” is in R2, a “Discover” in G3 or a "Browse" of the BACnet/IP network in WorkPlace Tech Commissioning Tool.