Solvline Eddy DK Ver 2.20 - Manual (Page 13)

Chapter 2. Getting Started
6 RXD- Receive Data -
LED Description
Left Green
Upon 100Base-TX link, it lights. When the data is sent or
received, it blinks.
Right Yellow
Upon 10Base-T link, it lights. When the data is sent or received, it
blinks.
2.3.3.2.
Serial Port
Figure 2-1 Serial port pin description
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 RI Ring Indicator (Input)
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)
RS485 Half Duplex
Pin Signal Description
3 TRX+ Transmit/Receive differential data positive
7 TRX- Transmit/Receive differential data negative
2-5