Db-25 To Db-9 Null Modem Cable - ADC InterReach Fusion Installation, Operation And Reference Manual

A.6
D-620610-0-20 Rev D

DB-25 to DB-9 Null Modem Cable

Use a DB-9 female to DB-9 female null modem cable to connect the craft person's
PC/Laptop to the RS-232 port on the front of the Fusion Hub for IP address configu-
ration. Table A-3 lists the cable pinout and Figure A-3 shows a diagram of its wiring.
DB-9 Female to DB-9 Female Null Modem Cable Pinout
Table A-3
From Signal
P1-4 DTR
P1-6 DSR
P1-3 TXD
P1-2 RXD
P1-5 GND
P1-7 RTS
P1-8 CTS
P1-9 N/C
DB-9 Female to DB-9 Female Null Modem Cable Diagram
Figure A-3
DB-9 DB-9
Connector Connector
Pin Pin
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
Note that for each DB-9 connector, pins 1 and 6 are tied together and sent to pin 4
of the opposite connector, providing the required handshake signals.
Help Hot Line (U.S. only): 1-800-530-9960
To Signal
P2-6, P2-1 DSR, DCD
P1-1, P2-4 DCD, DTR
P2-2 RXD
P2-3 TXD
P2-5 GND
P2-8 CTS
P2-7 RTS
N/C N/C
A-11
CONFIDENTIAL