Aaeon EMB-H81B - Serial Port Connectors

EMB-H81B
2-24
NOTES:
• Theserialportcablesarepurchasedseparately.
• OnlyCOM1cansupportRS-422andRS-485.
17. Serial port connectors (10-pin COM1, COM2)
Theseconnectorsareforserial(COM)ports.Connecttheserialportcables
totheseconnectors,theninstallthemoduletoaslotopeningatthebackof
the system chassis.
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.
EMB-H81B Serial port connectors
PIN 1
COM1
DCD# (422TXD- / 485TXD-)
TXD (422TXD+ / 485TXD+)
GND
RTS#
Ring / +5V / +12V
RXD (422RXD+)
DTR# (422RXD-)
DSR#
CTS#
(NC)
PIN 1
COM2
DCD#
TXD
GND
RTS#
Ring
RXD
DTR#
DSR#
CTS#
(NC)