• Set the BACnet MS/TP MAC addresses of the ProtoNode to a value between 1 to 127
(MAC Master Addresses); this is so that the BMS Front End can find the ProtoNode
via BACnet auto discovery.
NOTE:
Never set a BACnet MS/TP MAC Address from 128 to 255. Addresses from 128 to 255 are
Slave Addresses and cannot be discovered by BAS Front Ends that support auto discovery
of BACnet MS/TP devices.
• Set “A” bank DIP switches A0 – A7 to assign a MAC Address to the ProtoNode for
BACnet MS/TP.
• Please refer to Appendix A for the complete range of MAC Addresses and DIP switch
settings.
Figure 2-7: MAC Address DIP Switches
NOTES:
When setting DIP Switches, please ensure that power to the board is OFF.
A MAC address greater than 127 will cause the ERR LED to light and will disable the
ProtoNode from being discovered by the BAS. Either set the MAC address to 127 or lower, or
change the “MAX MAC” on the Configuration page.
2.5.2 BACnet MS/TP and BACnet/IP (FPC-N34): Setting the Device Instance
• Except when Single Node option is selected, the BACnet Device Instances will be
calculated by adding the Node_Offset (default value is 50,000) to the device’s Modbus
Node ID (that was assigned in Section 2.3.2).
• When Single Node option is selected, the device instance will be calculated by adding
the Node_Offset to the MAC address.
• The BACnet Device Instance can range from 1 to 4,194,303.
For example:
Node_Offset value (default) = 50,000
o Device 1 has a Modbus Node-ID of 1
o Device 2 has a Modbus Node-ID of 2
o Device 3 has a Modbus Node-ID of 3
o Given that: Device Instance = Node_Offset + Modbus Node_ID
o Device Instance, Device 1 = 50,000 + 1 = 50,001
o Device Instance, Device 2 = 50,000 + 2 = 50,002
o Device Instance, Device 3 = 50,000 + 3 = 50,003
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