Aaeon EMB-Q77A Manual de usuario descargar pdf (Pagina 34)

EMB-Q77A

2-26

10. Serial port connectors (10-1 pin COM1, COM2)

These connectors are for serial (COM) ports. Connect the serial port module

cables to these connectors, then install the module to a slot opening at the

back of the system chassis.

EMB-Q77A Serial port connector

PIN 1

COM1

DCD

TXD

GND

RTS

RI/+12V/+5V

RXD

DTR

DSR

CTS

PIN 1

COM2

DCD

TXD

GND

RTS

RI/+12V/+5V

RXD

DTR

DSR

CTS

Pin Signal Pin Signal

1 DCD (422TXD-/485DATA-) 2 RXD (422RXD+)

3 TXD (422TXD+/485DATA+) 4 DTR (422RXD-)

5 GND 6 DSR

7 RTS 8 CTS

9 RI/+12V/+5V 10 N.C.

NOTES:

• The COM module is purchased separately.

• Only COM1 can support RS-422 and RS-485.

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Aaeon EMB-Q77A Manual de usuario Pagina 34