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© Turntide Technologies. Condential. All Rights Reserved. DOCT00369-082321 Last Modied: 2023-03-09
network can only be used for a single protocol at a time.
Supported Protocols
• Trane Comm4
• BACnet MSTP
• BACnet IP
• NOAA Weather
• Modbus TCP
• Modbus RTU
• OpenADR
• Generic REST
4.2.2. Wiring
RS-485 networks must be run as a daisy chain between equipment. Star and Spoke connections are not allowed and
can cause network communication issues.
The Turntide hub can be positioned at any point along the network though it is highly recommended the hub be placed at
the physical end of line for best network performance.
Note: The shield wire must be connected along the daisy chain for proper functionality
Note: A single common cable type must be used along the entire network. Splicing of different cable types can lead to network faults.
RS485 Connections
(BACnet MSTP, Modbus)
4.2.3. How to Terminate
When using RS-485 ensure all terminations are secure with no crossed wires.
Note: The RS-485 cable’s shield should be connected to earth ground at one end only
4.2.3.4. Turntide Hub 7
There are no bias or termination switches on Turntide Hub 7.
4.2.4. Limitations / Cable Specications
Allowed cable types
Twisted pair(1 or 2) shielded cable with braid and foil
Cable size
24 - 22 AWG
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