Moxa Technologies Moxa Smartio C168H Bedienungsanleitung PDF herunterladen (Seite 17)

Hardware Installation

Smartio C168H/PCI User’s Manual 2-5

RS-422 Mode

Set the DIP switch to the OFF position to use the RS-422 interface. This means that

the port is set to full-duplex; i.e., it is always ready to simultaneously transmit and

receive data.

RS-485 Mode

Set the DIP switch to the ON position to use 2-wire RS-485 communication. This

means that the port is set to half-duplex; i.e., it can transmit data only when RTS is

asserted, and can receive data only when RTS is not asserted.

Refer to the chapter Connection Option (Opt8x) and Cable Wiring for RS-422/485

cable wiring specs, and to the chapter Serial Programming Tools for Opt8J RS-485

programming details.

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Moxa Technologies Moxa Smartio C168H Bedienungsanleitung Seite 17