ProtoNode FPC-N34 & FPC-N35 User Manual
CHAPTER 2
– BACnet/LonWorks Setup
OMM-0150_B
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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 Chapter 5
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 2.3.2
will be the Metasy N2 or Modbus TCP/IP Node_ID’s to the field
protocols.
•
Metasys N2 and Modbus TCP/IP Node-ID Addressing: Metasys N2 and Modbus
TCP/IP Node-
ID’s range from 1-255.
2.5.4 BACnet MS/TP or Modbus RTU (FPC-N34): Setting the Baud Rate for BAS
Network
•
“B” bank DIP switches B0 – B3 can be used to set the Field baud rate of the
ProtoNode to match the baud rate required by the Building Management System for
BACnet MS/TP or Modbus RTU.
•
The baud rate on ProtoNode for
Metasys N2 is set for 9600. “B” bank DIP switches
B0
– B3 are disabled for Metasys N2 on ProtoNode FPC-N34.
•
“B” bank DIP switches B0 – B3 are disabled on ProtoNode FPC-N35 (FPC-N35
LonWorks).
B0 B1 B2 B3
Figure 2-8: BMS Baud Rate DIP Switches
2.5.4.1
Baud Rate DIP Switch Selection
Baud
B0
B1
B2
B3
9600
On
On
On
Off
19200
Off
Off
Off
On
38400 *
On
On
Off
On
57600
Off
Off
On
On
76800
On
Off
On
On
* Factory default setting = 38,400
Figure 2-9: BMS Baud Rate
