User guide

Embedded Controller AEC-6637
Chapter 2 Hardware Installation 2 - 22
RS-485
Pin Pin Name Signal Type Signal Level
1 RS485_D- I/O ±5V
2 NC
3 NC
4 NC
5 RS485_D+ I/O ±5V
6 NC
7 NC
8 NC/+5V/+12V PWR +5V/+12V
9 GND GND
Note: COM2 RS-232/422/485 can be set by BIOS setting. Default is
RS-232. Pin 8 function can be set by JP8.
2.23 LPT/ Digital I/O Port Connector (CN12)
LPT Mode
STROBE#
12
25 26
AFD#
ERROR#
PRINT#
SLIN#
GND
GND
GND
GND
GND
GND
GND
GND
N.C
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
ACK#
BUSY
PE
SLCT