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IB822 Series
User’s Manual
2.5.10 COM2 / COM3 / COM4 RS-232 Port (J18, J17, J14)
J14:
COM4
J18:
COM2
J17:
COM3
Pin
Assignment
Pin
Assignment
1
DCD, Data carrier detect
2
RXD, Receive data
3
TXD, Transmit data
4
DTR, Data terminal
ready
5
Ground
6
DSR, Data set ready
7
RTS, Request to send
8
CTS, Clear to send
9
RI, Ring indicator
10
Not Used
2.5.11 Digital I/O Connector (J19)
Pin
Assignment
Pin
Assignment
1
Ground
2
VCC
3
OUT3
4
OUT1
5
OUT2
6
OUT0
7
IN3
8
IN1
9
IN2
10
IN0
1
9
2
10
10
2
9
1