Advantech Celeron M Universal Network Controller with PC/104 Extension UNO-2170 Manual do Utilizador descarregar pdf (Página 16)

UNO-2170 User Manual 10

2.3.5 RS-232/422/485 Selection

COM3 and COM4 support 9-wire RS-232, RS-422 and RS-485 inter-

faces. The system detects RS-422 or RS-485 signals automatically in RS-

422/485 mode.

To select between RS-422/485 and RS-232 for COM3, adjust JP4.

To select between RS-422/485 and RS-232 for COM4, adjust JP5.

Jumper setting for RS-422/485 interface: (Default setting). (JP4 and JP5)

Figure 2.3: RS-422/485 jumper setting

Jumper setting for RS-232 interface: (JP4 and JP5)

Figure 2.4: RS-232 jumper setting

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Advantech Celeron M Universal Network Controller with PC/104 Extension UNO-2170 Manual do Utilizador Página 16