Moxa W406-LX [20/24] Connecting to a serial device

W321/341 Hardware Setting Up the W321/341

3-5

Connecting to a Serial Device

Your serial device can plug into the embedded computer’s serial port using a serial cable. Serial ports P1 to P4

have male DB9 connectors and can be configured for RS-232, RS-422, or RS-485 communication through

software. The pin assignments are shown in the following table:

DB9 Male Port

-232/422/485 Pinouts

Pin RS-232 RS-422

RS-485

(4-wire)

RS-485

(2-wire)

1 DCD TxDA(-) TxDA(-) ---

2 RxD TxDB(+) TxDB(+) ---

TxD

RxDB(+)

DataB(+)

4 DTR RxDA(-) RxDA(-) DataA(-)

5 GND GND GND GND

6 DSR --- --- ---

7 RTS --- --- ---

8 CTS --- --- ---

Serial Console Port

The serial console port is a 4-pin pin-header RS-232 port. It is designed for serial console terminals, which are

useful for viewing boot-up messages.

Serial Console

Port & Pinouts

Serial Console Cable

Pin Signal

1 TxD

2 RxD

3 NC

4 GND