C
ABLES
B-6Console Port to 9-Pin COM Port on PCConsole Port to 25-Pin DTE Port on PC
Switchs 9-Pin
Serial Port
CCITT Signal PCs 9-Pin
COM Port
1 DCD ----------- DCD ------------ 1
2 RXD <--------- TXD ------------ 3
3 TXD ----------- RXD ----------> 2
4 DTR ----------- DSR ----------> 6
5 SGND ----------- SGND ---------- 5
6 DSR ----------- DTR ------------ 4
7 RTS ----------- CTS -----------> 8
8 CTS <--------- RTS ------------- 7
9 RI ----------- RI --------------- 9
Switchs 9-Pin
Serial Port
Null Modem PCs 25-Pin
DTE Port
1 DCD 8 DCD
2 RXD 3 TXD
3 TXD 2 RXD
4 DTR 20 D TR
5 SGND 7 SGND
6 DSR 6 DSR
7 RTS 4 RTS
8 CTS 5 CTS
9 RI 22 RI
11
23
32
48
520
67
74
95
20 6