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9
Adapter signals
Listed are the pin specifications for the BayTech cable and adapters and the terminal COM ports:
Serial 1: Port Pin out Table
Signal RS-232
Port (DS)
RS-232 Port
(RPC)
COM Port
DE-9 Pin
COM Port
DB-25 Pin
Signal
DTR 1
1
4
20 DSR
GND 2
2
1 GND
RTS 3
3
7
5 CTS
TXD 4
4
3
2 RXD
RXD 5
5
2
3 TXD
DSR 6
N/C
6
6 DTR
GND 7
7
5
7 GND
CTS 8
8
4 RTS
DTR
4
DCD
DCD
8
1
8 DTR
RI 9
22
RJ08X007 Standard Rollover Cable – RJ45 to RJ45
Serial 2: RJ08X007 Pin out
Serial 3: RJ45 Receptacle & Plug