Lanner LEC-2055 Bedienungsanleitung PDF herunterladen (Seite 13)

Board Layout

Chapter 3

Embedded and Industrial Computing

COM Protocol

Setting

RS-232 RS-422 RS-485

Selector 1

Selector 2

Selector 3

Selector 4

1 ON

2 OFF

3 OFF

4 OFF

1 OFF

2 ON

3 OFF

4 ON

1 OFF

2 OFF

3 ON

4 ON

Default:RS-232 Only

Note: Enable “serial Port 1 (2 ) RS-485 driver” in

the BIOS when using RS-422/RS-485.

SW5: Select COM1/COM2 Termination in RS-485

This switch is used to enable or disable the signal

termination for COM1 and COM2. We strongly recommend

that you disable termination when the port is configured

as RS-232 and enable it when the port is configured as RS-

485/RS-422

COM Port NO.

Setting

Port No. Without 120Ω

Termination

With120Ω

Termination

Selector 1

Selector 2

COM1

OFF

Selector 3

Selector 4

COM2 OFF ON

OFF ON

Default: all OFF.

PCOM1: Select COM1 pin 9 function

PCOM2: Select COM2 pin 9 function

RS-232 COM Port(COMB1, COM3): It is the RS-232 serial

pin header.

Jumper Settings

Serial-ATA Connector (SATA1): It is for connecting a 2.5’’

SATA harddisk to be served as your system’s storage. It can

support SATA II which features Data transfer rates up to 3.0

Gb/s (300 MB/s).

4-pin Serial-ATA Power Connector (PS4S1): It is for

connecting the SATA power cord.

Serial Port(COM1/COM2): It is the RS-232/422/485 port

through the D-SUB9 connector.

RS-232/422/485 Pinout:

SW3: Select COM1 Protocol Setting (SW3)

SW4 : Select COM2 Protocol Setting (SW4):

RS-232

RS-422

RS-485

6789

12345

Pin No. Pin Name

RS-232 RS-422 RS-485

1 DCD TX+ D+

2 RXD TX- D-

3 TXD RX+ --

4 DTR RX- --

5 GND GND GND

6 DSR -- --

7 RTS -- --

8 CTS -- --

9 RI -- --

Pin No. Function

1 GND

2 TX+

3 TX-

4 GND

5 RX-

6 RX+

7 GND

Pin No. Function

1-2 RS-232 Ring (default)

3-4 +5V

5-6 +10.5V

LEB-2055

Pin No. Function Pin No. Function

1 DCD 2 DSR

3 RXD 4 RTS

5 TXD 6 CTS

7 DTR 8 RI

9 GND 10 KEY

Pin No. Function

1 NC

2 Ground

3 Ground

4 5V

4 3 2 1

Off

COM1

COM2

4 3 2 1

SW5

Off

SW5

Off

4 3 2 1

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 22 23

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