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DH1 BASE UNIT / DH2 WIRELESS GATEWAY
USER GUIDE
3. DH1 Base Unit RS485 Port
4. Config Port
Pin
Pin Name
Generic Modbus Device
1
GND
GND
2
Reserved
3
RX+
TX+
4
RX
−
TX
−
5
TX
−
RX
−
6
TX+
RX+
7
Reserved
8
Reserved
Pin
Pin Name
PC Configuration Cable DB9 (Pin Number)
1
Reserved
2
DEBUG
Ground (5)
3
TXD
RXD (2)
4
RX
D
TXD (3)
5
CTS
RTS (7)
6
GND
GND (5)
7
RTS
CTS (6)
8
Reserved
Pin 1
Pin 1
Pin 1
Controlled Copy