2bsignal, 3bsignal – AAEON TKS-G20-LN05 Rev.B User Manual
Page 21
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E m b e d d e d C o n t r o l l e r
T K S - G 2 0 - L N 0 5 R e v . B
Chapter 2 Quick Installation Guide
2 - 7
2.5 COM Port #2 RS-232/422/485 Selection (CN22)
COM2 RS-232/422/485 selection for AAEON TKS series is set in BIOS setting
as following:
Entering BIOS Setting Menu: Choose "Integrated Peripherals
Super IO
device
COM2 select". (Default setting is at "RS-232")
Different devices implement the RS-232/422/485 standard in different ways. If
you have problems with a serial device, check the pin assignments below for
the connector.
RS-232 Mode
Pin
Signal Pin
Signal
1 DCDB
2 DSRB
3 RXB
4 RTSB
5 TXB
6 CTSB
7
DTRB
8
RIB / +5 Volt. / (+12 Volt.)
9 Ground
10
N/C
RS-422 Mode
Pin
Signal Pin
Signal
1 TXD-
2 N/C
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