Bacnet Ms/Tp And Bacnet/Ip (Fpc-N34): Setting The Device Instance; Metasys N2 Or Modbus Tcp/Ip (Fpc-N34): Setting The Node-Id - SMC Networks ProtoNode FPC-N34 Manual

2.5.2 BACnet MS/TP and BACnet/IP (FPC-N34): Setting the Device Instance

•
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 ).
•
The BACnet Device Instance can range from 1 to 4,194,303.
For example:
If the following is true:
o
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 22
o
Device 3 has a Modbus Node-ID of 33
And given that: Device Instance = Node_Offset + Modbus Node_ID
Then Device Instances are:
o Device 1 = 50,000 + 1 = 50,001
o Device 2 = 50,000 + 22 = 50,022
o Device 3 = 50,000 + 33 = 50,033
2.5.2.1 BACnet MS/TP or BACnet/IP: Assigning Specific Device Instances
•
With the default Node_Offset value of 50,000 the Device Instances values generated will be
within the range of 50,001 to 50,127.
•
The values allowed for a BACnet Device Instance can range from 1 to 4,194,303.
•
To assign a specific Device Instance (or range), change the Node_Offset value.
•
Methods for changing the Node_Offset value are provided in Section
o
This step cannot be performed until after the unit is connected and powered.
2.5.3 Metasys N2 or Modbus TCP/IP (FPC -N34): Setting the Node-ID
•
The Modbus RTU Node-ID's assigned to the devices attached to the ProtoNode in Section will
be the Metasy N2 or Modbus TCP/IP Node-ID's to the field protocols.
•
Node-ID's range from 1-255. Refer to
Node-ID.
Appendix C.1 for the full range of addresses for setting
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ProtoNode Startup Guide
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