User Manual

Chapter 3. Hardware Description
figure 3-17 J8 PIN header
◇ J8 : RS232
Pin Signal Description
1 DCD Data Carrier Detection (Input)
2 RXD Receive Data (Input)
3 TXD Transmit Data (Output)
4 DTR Data Terminal Ready (Output)
5 GND Ground
6 DSR Data Set Ready (input)
7 RTS Request to Send (Output)
8 CTS Clear to Send (Input)
9,10 NC No Connection
◇ J8 : RS422 Full Duplex
Pin Signal Description
2 RXD+ Receive differential data positive (Input)
3 TXD+ Transmit differential data positive (Output)
6 RXD- Receive differential data negative (input)
7 TXD- Transmit differential data negative (Output)
◇ J8 : RS485 Half Duplex
Pin Signal Description
3 TRX+ Transmit/Receive differential data positive
7 TRX- Transmit/Receive differential data negative
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