UNO-1019 User Manual 10
2.4 Serial Connections
2.4.1 Serial Type Selection
UNO-1019 provides 4 serial Com ports, COM1 & COM2 provide RS-
232, and COM3 & COM4 provide RS-232/422/485. The default settings
of COM3 & COM4 is RS-422/485, and the UNO-1019 could identify
RS-422 or RS-485 automatically according to your wiring. If users want
to change the serial type, the chassis can be opened and modified.
Figure 2.2: COM3 & COM4 Serial Selection
