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Compact Board PCM- 6892 Rev.B
Chapter 2 Quick Installation Guide 2 - 18
2.21 COM1~4 Connector (CN11)
Pin Signal Pin Signal
1 DCD1 2 DSR1
3 RXD1 4 RTS1
5 TXD1 6 CTS1
7 DTR1 8 RI1
9 GND 10 N.C.
11
DCD2 (422TXD-/485DATA-)
12 DSR2
13 RXD2 (422RXD+) 14 RTS2
15
TXD2 (422TXD+/485DATA+)
16 CTS2
17 DTR2 (422RXD-) 18 RI2/+12V/+5V
19 GND 20 N.C.
21 DCD3 22 DSR3
23 RXD3 24 RTS3
25 TXD3 26 CTS3
27 DTR3 28 RI3
29 GND 30 N.C.
31 DCD4 32 DSR4
33 RXD4 34 RTS4
35 TXD4 36 CTS4
37 DTR4 38 RI4
39 GND 40 N.C.