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3.3
Configuring Device Communications
3.3.1 Input COM Settings on the Device Connected to the ProtoAir
•
The 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.
Figure 4
NOTE: The COM parameters are adjustable.
3.3.2 Set Node-ID for the Device Attached to the ProtoAir
•
Set Node-ID for the device attached to ProtoAir to 1.
•
Document the Node-ID that is assigned to the device. The Node-ID's assigned are used for
deriving the Device Instance for BACnet/IP. (Section 3.3.3)
NOTE: The Modbus TCP/IP field protocol Node-IDs are automatically set to be the same value as
the Node-ID of the device.
3.3.3 BACnet: Calculating the Default Device Instance
•
The Device Instance value is automatically generated using the following formula:
BACnet Device Instance = (Device Node-ID) + (Default Node Offset)
NOTE: The default Node Offset is 50,000.
For example, if Device A has a Node-ID of 1 then:
BACnet Device Instance A = (1) + (50000) = 50001
NOTE: The Node-ID is set in Section 3.3.2.
•
To reach a specific BACnet Device Instance result, refer to Section 7.
3.4
Attaching the Antenna
Wi-Fi Antenna:
Screw in the Wi-Fi antenna to the front of the unit as shown in
Port Setting
Protocol
Baud Rate
Parity
Data Bits
Stop Bits
Figure 4: COM Settings
Page 9 of 43
Siemens ProtoAir Start-up Guide
Devices
Modbus RTU
19200
Even
8
1
Figure
32.
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