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Siemens ProtoAir Start-up Guide
Page 10 of 66
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.
•
specifies the device serial port settings required to communicate with the ProtoAir.
Port Setting
Devices
Protocol
Modbus RTU
Baud Rate
19200
Parity
Even
Data Bits
8
Stop Bits
1
Figure 4: COM Settings
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
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.