UIO-4031 RS485：U-COM0/1、U-COM2/3

Send and Receive Data

The following figure shows the connection mode.

Taking COM1 as receiver and COM2 as sender :

# #---- COM1 as receiver ----# #
# stty -F /dev/ttyUSB0 115200 cs8 -cstopb -parenb -crtscts
# cat /dev/ttyUSB0 &

# #---- COM2 as sender ----# #
# stty -F /dev/ttyUSB1 115200 cs8 -cstopb -parenb -crtscts
# echo pass > /dev/ttyUSB1

# #----If no error, the receiver will receive “pass”----# #
pass

Note:

1、Receiver should run before sender.

2、The “serial port parameters” should be the same for sender and receiver.