UIO-4033 RS485：COM1、COM2、COM3、COM4
From ESS-WIKI
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
