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LEC-7000 Fanless Embedded System User’s Manual

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

Data Carrier

Detect (DCDA #)

TXRX- TX-

Receive Data

(RXDA)

TXRX+ TX+

Transmit Data

(TXDA)

RX-

Data Terminal

Ready (DTRA #)

RX+

5 Ground (GND)

Data Set Ready

(DSRA #)

Request To Send

(RTSA #)

Clear To Send

(CTSA #)

Ring

Indicator(RIA#)

10 KEY

SC2T3/SC2T4: Select COM2 Type Jumper

COM2 TYPE SC2T4 SC2T3

RS-232 (Default) 1-2 1-2,5-6,7-8,11-12

RS-422 3-4 2-4,3-5,6-8,9-11

RS-485 5-6 2-4,3-5,6-8,9-11

9 6

COM2

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 36 37

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