AAEON PFM-540I Rev.B - Manual (Page 28)

P C / 1 0 4 C P U M o d u l e P F M - 5 4 0 I R e v . B
Chapter 2 Quick Installation Guide 2 - 16
7 RTS 8 CTS
9 RI/5V 10 N.C
2.20 COM3 Connector (CN11)
Pin Signal Pin Signal
1 DCD 2 RXD
3 TXD 4 DTR
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N.C
2.21 Power Connector (CN12)
Pin Signal
1 +5V
2 GND
3 GND
4 +12V
2.22 COM 2 Connector (CN13)
Pin Signal Pin Signal
1 DCD(485/422_TX-) 2 RXD(422_RX+)
3 TXD(485/422_TX+) 4 DTR(422_RX-)
5 GND 6 DSR
7 RTS 8 CTS