
PC 104 CPU Module PFM-540I
Chapter 2 Quick Installation Guide 2- 17
2.21 Power Connector (CN12)
Pin Signal 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
9 RI/5V 10
N.C.
2.23 Ethernet Connector (CN14)
Pin Signal Pin Signal
1 RX- 2
RX+
3 N.C. 4
N.C.
5 CHASSIS_GND 6
CHASSIS_GND
7 N.C. 8
N.C.
9
TX+
10
TX-
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