Jumper And Connectors - Lanner LEC-7230 User Manual

Jumper and Connectors

RS-232/422/485 Serial Port (COM1 and COM2): It is
an RS-232/422/485 port with automatic hardware flow
control through a D-SUB9 connector.
1 2 3 4 5
Pin No.
1 data Carrier detect ( dCd # )
2 Receive data ( RXd )
3 Transmit data ( TXd )
4 data Terminal Ready ( dTR # )
5
6 data set Ready ( dsR # )
7 Request To send ( RTs # )
8 Clear To send ( CTs # )
9 Ring Indicator ( RI # )
Pin No. signal
Rs-422
1 TXd-
2 TXd+
3 RXd+
4 RXd-
5 GNd
Note: To switch among RS-232, 422, 485
communication protocols, use the BIOS menu.
6 7 8 9
signal
Rs-232
Ground ( GNd )
Pin No. signal
Rs-485
1 dATA-
2 dATA+
3
4
5 GNd
Select COM1/COM2 Pin 9 Function (JRI1/JRI2): The
pin 9 of COM1 and COM2 can be altered by JRI1 and JRI2
respectively according to the following jumper settings.
JRI1: COM1
2 4 6
Default
1 3 5
2 4 6
+5V
2 4 6
+12V
1 3 5
Jumper Setting
Function
RI# (default)
+5V
+12V
JRI2: COM2
5
6
3
4
1
2
5
6
3
4
1
2
5
6
3
4
1
2
SW1/SW4
1-2
3-4
5-6