Owner`s manual

DS72 Host Module
11
Cabling
RJ-45 Cables and Adapters
DS72 EIA-232 RJ-45 Pin/Signal Definition
Pin EIA 232
Signal
Signal
Direction
Description
1 DTR Out
Handshake, Line Driver Inactive State = High: +12V when power is
applied. Used as a handshake line to enable/disable the receiving of
characters.
2 GND Signal Ground
3 RTS Out
Handshake, Line Driver Inactive State = High: +12 V when power is
applied. Not used to enable/disable.
4 TX Out Transmit Data Out
5 RX In Receive Data In
6 DSR In
Handshake In. –12V when not used.
7 GND Signal Ground
8 CTS In
Used as a handshake line to enable/disable the receiving of characters.
Adapters Signals
Listed are the pin specifications for the BayTech cable and adapters and the terminal COM ports:
Signal
RS-232
Port (DS)
RS-232
Port (RPC)
COM Port
DE-9 Pin
COM Port
DB-25 Pin
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