Lanner LEC-7230 Manual de usuario descargar pdf (Pagina 13)

Board Layout

Chapter 3

Embedded and Industrial Computing

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.

Default

+5V

+12V

Jumper Setting

Function

SW1/SW4

RI# (default) 1-2

+5V 3-4

+12V 5-6

Jumper Settings

RS-232 Pin Headers (JCOM1/2): It is a RS-232 serial

communication interface Connector

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.

Note: To switch among RS-232, 422, 485

communication protocols, use the BIOS menu.

Pin No. Signal

RS-232

1 Data Carrier Detect ( DCD # )

2 Receive Data ( RXD )

3 Transmit Data ( TXD )

4 Data Terminal Ready ( DTR # )

5 Ground ( GND )

6 Data Set Ready ( DSR # )

7 Request To Send ( RTS # )

8 Clear To Send ( CTS # )

9 Ring Indicator ( RI # )

JRI1: COM1 JRI2: COM2

6789

12345

1 3 5

2 4 6

1 3 5

Pin No. Signal

RS-232

1 Data Carrier Detect ( DCD # )

2 Receive Data ( RXD )

3 Transmit Data ( TXD )

4 Data Terminal Ready ( DTR # )

5 Ground ( GND )

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

Pin No. Signal

RS-485

1 DATA-

2 DATA+

GND

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 23 24

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