
E m b e d d e d C o n t r o l l e r
A E C - 6 6 2 5
Chapter 2 Hardware Installation
2 - 10
2.5 RS-232/422/485 Serial Port Connector (COM 2)
4
5
2
3
1
6
7
8
9
Pin Signal
Pin Signal
1
DCD (422TXD-/485DATA-)
2
RXD ()
3
TXD (/)
4
DTR (422RXD-)
5 GND
6 DSR
7 RTS
8 CTS
9 RI/+5V/+12V
Selection
COM2 RI/+5V/+12V Selection (JP6)
Pin
Signal
1-2 +12V
3-4 RI
(Default)
5-6 +5V