Db9 interface connectors, Db9 pinouts, Building db9 female loopback plugs – Comtrol ISA User Manual
Page 4
RocketPort® ISA Hardware Installation
4 of 9
•
Rack Mount Models are available with RJ45
connectors (back panels shown).
-
16 Port RS-232 (with Red LEDs)
-
16 Port RS-422 (with Red LEDs)
-
16 Port RS-232 with integrated status LEDs. The
yellow LEDs show receiving activity. The green
LEDs show transmitting activity.
-
32 Port RS-232 with integrated status LEDs. The
yellow LEDs show receiving activity. The green
LEDs show transmitting activity.
•
RocketPort 4J (RJ45) or 8J (RJ11):
DB9 Interface Connectors
There are Quadcable and Octacable models available with
DB9 connectors on a fanout cable.
DB9 Pinouts
Use this table and figure for information about the DB9
connectors that are used on the Quadcable and Octacable.
Building DB9 Female Loopback Plugs
Loopback plugs are used with the
diagnostics to test serial ports.
This loopback is used with the
Quadcable and Octacable. Wire the
following pins together:
•
Pins 1 to 4 to 6
•
Pins 2 to 3
•
Pins 7 to 8 to 9
Port
0
1
2
3
4
5
6
7
8J
Port
0
1
2
3
4J
Pin
DB9M RS-232
Signal
1
CD
2
RxD
3
TxD
4
DTR
5
Signal GND
6
DSR
7
RTS
8
CTS
9
Not Used
Pin 1
Pin 5
Pin 6
Pin 9
DB9 Male
Pin 5
Pin 1
Pin 9
Pin 6
DB9 Female
Pin 1
Pin 5
Pin 6
Pin 9
RS-232 (Back View)