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10
Installing the Gateway
LAARS ProtoNode Start-up Guide
10
2.3
Configuring Device Communications
2.3.1 Confirm the Device and ProtoNode COM Settings Match
•
Any connected serial devices
MUST have the same baud rate, data bits, stop bits, and
parity settings as the ProtoNode.
•
Figure 4
specifies the device serial port settings required to communicate with the ProtoNode.
Port Setting
Device
Protocol
Modbus RTU
Baud Rate
38400
Parity
None
Data Bits
8
Stop Bits
1
Figure 4: COM Settings
2.3.2 Set Node-ID for Any Device Attached to the ProtoNode
•
Set Node-ID for any device attached to ProtoNode. The Node-ID needs to be uniquely assigned
between 1 and 255.
•
Document the Node-ID that is assigned. The Node-ID assigned is used for deriving the Device
Instance for BACnet/IP and BACnet MS/TP.
(
Section
8.3
)
NOTE: The Metasys N2 and Modbus TCP/IP field protocol Node-ID is automatically set to be the
same value as the Node-ID of the device.
LAARS Heating Systems
20
Industrial Way, Rochester, NH, USA 03867
•
(800) 900-9276
•
www.Laars.com
