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Com2 pin definition – Lanner LEC-2050 User Manual

Page 16

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LEC-2050 Fanless Embedded System User’s Manual

16

SC2T1/SC2T2: Select COM1 Type Jumper

COM1 TYPE

SC2T2

SC2T1

RS-232 (Default)

1-2

1-2,5-6,7-8,11-12

RS-422 3-4

2-4,3-5,8-10,9-11

RS-485

5-6

2-4,3-5,8-10,9-11




PCOM1: COM1 Pin 9
Function Jumper
The Ring Indicator (pin 9) of RS-232 port of COM1 can be altered to provide
different functions as the following:


PIN NO. DESCRIPTION

1-2

+5V

3-4

+12V

5-6

RI


COM2 Pin Definition:

Serial Port Type

PIN NO.

RS-232 RS-485 RS-422

1

Data Carrier

Detect (DCDA #)

TXRX- TX-

2

Receive Data

(RXDA)

TXRX+ TX+

3

Transmit Data

(TXDA)

RX-

1

5

9 6

COM2