Issue
How the MAC address of an I/A Series R2 UNC, ENC, or a Jace 8000/9000 can be discovered
Product Line
TAC I/A Series
Environment
I/A Series UNC (R2), ENC (AX), Jace 8000 and 9000 (N4)
Cause
Obtain the MAC address of the device for network configuration.
Resolution
- The UNC-410 / 5x0 MAC address can be obtained in two ways: Calculate the MAC using the serial number or use a command window on the connecting computer.
- Units built by Schneider-Electric have a serial number that ends in the letter B. If the UNC was built by Tridium (JACE), the MAC has a different prefix and it would be best to use the command window method.
- Example calculation: A UNC-510 with a serial number of 18496B -> 18496 converted to a hexadecimal value is 4840 hex -> add a 100 hex offset to the value -> 4940 hex. Append a fixed prefix of 00-20-96-05 for al UNCs. The MAC address for this UNC would be 00-20-96-05-49-40. This same calculation process applies to the ENC-410 and ENC-520 controllers that have a serial number ending with the letter B.
- Example calculation: ENC-520 with a serial number of 584520B -> 584520 converted to a hexadecimal value is 08EB48 hex -> add a 100 hex offset to the value -> 08EC48 hex. Append a fixed prefix of 00-20-96 and the MAC address for this ENC would be 00-20-96-08-EC-48.
- The other method is to connect the computer and the UNC / ENC with a network patch cable, open a command window, ping the IP address of the UNC, and then use arp -a to display the IP and physical MAC address (NOTE: the arp command will only work over the network if the PC and the UNC / ENC are on the same IP subnet).
- The JACE-8000 uses a Mac address assigned by Texas Instruments. The MAC address cannot be determined without powering up the device. Once the device is powered and a platform connection is made you can find the Mac address under Platform/TCP IP configuration/Expand Interface 1 and 2,
- Calculate the MAC Address based on the serial number
*The first three bytes are 00:01:F0 which is Tridium's Organizationally Unique Identifier (OUI) - JACE-9000 - the next three bytes are hex 96:40:00 + 2 times [the serial number minus 90000000] (in hex). That will give you the MAC of the second NIC. The MAC of the first NIC is that plus one.
Note
For OEM brand controllers the OUI may be different. You can search for an organization's registered OUI at IEEE.org
