BACnet IoT Gateway Start-up Guide
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3
INSTALLING THE BACNET IOT GATEWAY
3.1 RS-485
3.1.1 Connection P1 Port
NOTE: Ensure RS-485 is selected by checking that the number 4 DIP Switch is set to the left side.
Connect to the 3-pin connector as shown below.
The following Baud Rates are supported on the P1 Port:
9600, 19200, 38400, 57600, 76800
3.1.1.1 Wiring
RS-485
BMS RS-485 Wiring
BACnet IoT Gateway
Pin Assignment
RS-485 +
TX +
RS-485 -
RX -
GND
GND
NOTE: Use standard grounding principles for GND.
Figure 5: RS-485 R2 Connection Port
TX+ RX- GND
