Configuring Modbus Device Communications; 3.3.1 Input Com Settings On Any Device Connected To The Protoair; 3.3.2 Set Node-Id For Any Device Attached To The Protoair; Attaching The Antenna - Siemens ProtoAir FPA-W44 Startup Manual

3.3

Configuring Modbus Device Communications

3.3.1 Input COM Settings on Any Device Connected to the ProtoAir

•
Any connected serial device MUST have the same baud rate, data bits, stop bits, and
parity settings as the ProtoAir.
•
Figure 4 specifies the device serial port settings required to communicate with the ProtoAir.

3.3.2 Set Node-ID for Any Device Attached to the ProtoAir

•
Set Node-ID for the device attached to ProtoAir to 1.
•
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 7)
NOTE: The Modbus TCP/IP field protocol Node-IDs are automatically set to be the same value as
the Node-ID of the device.
3.4

Attaching the Antenna

Wi-Fi Antenna:
Screw in the Wi-Fi antenna to the front of the unit as shown in
NOTE: Using an external antenna is also an option. An external antenna can be plugged into the
SMA connector. The best antenna for the job depends on the range, topography and
obstacles between the two radios.
Port Setting
Protocol
Baud Rate
Parity
Data Bits
Stop Bits

Figure 4: COM Settings

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Siemens ProtoAir Start-up Guide
Devices
Modbus RTU
19200
Even
8
1
Figure 34.