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DH3 WIRELESS GATEWAY
USER GUIDE
34.
RS485 I/O EXPANSION SYSTEM WITH DH3
Users can add local I/O points by deploying the OleumTech RS485 I/O
Expansion System to a DH3.
Available Modules:
RS485 I/O Expansion Kit
Digital/Discrete
4-input x 4-output
Analog 4-20 mA
2-input x 2-output
Analog 0-10 V
2-input x 2-output
Added inputs can be mapped to DH3’s Modbus register table
Added outputs become part of DH3’s routable outputs
1.
Must have an available Serial/RTU port on DH3
2.
Open a BreeZ® project file containing a DH3
3.
Access DH3 properties by clicking “E” button or right-clicking and
selecting “edit”
4.
Determine which RTU port to use for I/O expansion
5.
Click on RTU port tab
a.
Set port as RS485 Modbus Master
Always use the following settings with the RS485 I/O Expansion
Module!
Baud Rate: 9600 Parity: None
Stop Bits: 1
