Configuring Device Communications; Set Com Setting On All Of The Devices Connected To The Protonode; Set Modbus Rtu Node-Id For Each Device Attached To The Protonode; Figure 4: Modbus Rtu Com Settings - SMC Networks ProtoNode FPC-N34 Manual

2.3 Configuring Device Communications

2.3.1 Set COM setting on all of the Devices connected to the ProtoNode

•
Set up all devices on the same subnet as the ProtoNode.
•
All of the serial devices connected to ProtoNode MUST have the same Baud Rate, Data
Bits, Stop Bits, and Parity settings.
•
Figure 4 specifies the device serial port settings required to communicate with the ProtoNode.
•
Set the Modbus COM settings on the devices now. When mixing devices, the selected baud
rates are required to match the slowest device (ENVI=9600). When there are no ENVI units
present, the baud rate could be set faster (LOVE end NURO support 19200 and 38400).
The ProtoNode's default settings are 9600 / None / 8 /1
o
o Ability to change the ProtoNode's Device COM settings are offered later in Section
•
The Selected device COM settings need to be documented.
Serial Port Setting
Protocol
Baud Rate
Parity
Data Bits
Stop Bits

2.3.2 Set Modbus RTU Node-ID for each Device attached to the ProtoNode

•
Set Modbus Node-ID for each of the devices attached to ProtoNode. The Modbus Node-ID's
need to be uniquely assigned between 1 and 255.
o
The Modbus Node-ID that is assigned for each device needs to be documented.
The Modbus Node-ID's assigned are used for designating the Device Instance for
•
The Metasys N2 and Modbus TCP/IP Node-IDs are automatically set to be the same value as the
Node-ID of the Modbus RTU device.
ENVI
Modbus RTU
9600
None
8
1

Figure 4: Modbus RTU COM Settings

BACnet/IP and BACnet MS/TP (Section
Page 9 of 50
LOVE
Modbus RTU Modbus RTU
9600, 19.2k, 38.4k 9600, 19.2k, 38.4k
None None
8 8
1 or 2 1 or 2
2.5.2)
ProtoNode Startup Guide
2.5.1
NURO