UNO-2050E User Manual
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2.1 UNO-2050E Peripherals
The following two figures show the connectors on UNO-2050E. The fol-
lowing sections give you detail information about function of each
peripheral.
Figure 2.1: UNO-2050E Front Panel
Figure 2.2: UNO-2050E Rear Panel
2.2 COM1 & 2: RS-232 Interfaces
The UNO-2050E offers two standard RS-232 serial communication inter-
face ports, and they are COM1 and COM2. Please refer to A.2 for its pin
assignments.
2.3 COM3 & 4: Isolated 5-wire RS-232/422/485
The UNO-2050E offers two isolated 5-wire RS-232/422/485 serial com-
munication interface ports, and they are COM3 and COM4. The connec-
tor type of COM3 and COM4 is screw-terminal block that it’s easy for
wiring without additional daughter board. Each port can be configured
individually to either RS-232, RS-422 or RS-485 by using on-board
jumpers (see Appendix A.3), and Table 2-1 lists the default setting of
each port.
Table 2.1: Serial Port Default Setting
COM Port
Default Setting
COM3
RS-485
COM4
RS-485
