UIO-4033 RS485：COM1、COM2、COM3、COM4

UIO-4033  both have four RS485 ports.

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