RocketPort® 485 Hardware Installation Card
5 of 8
DB9 Interfaces
The interface box, the Quadcable, and the Octacable all
feature DB9 ports, labeled from 1 to 8,which correspond to
the jumpers on the card.
Note: Although the RocketPort 485 card supports eight
ports, if you have a quadcable connected, you will
only have four ports available for use.
DB9 Pinouts
Each connector is a DB9 male, with pins numbered as
shown below:
Depending on jumper configuration, the pins carry the
following values:
*
Ports 1 and 2 can be either RS-232 or RS-485, while
Ports 3 through 8 are RS-232 only. All RS-232 control
signals are present in RS-485 mode, but not used.
** Ports 3 - 8 can be configured to carry +5V on Pin 9.
Do not use the +5V power option with the Quad/
Octacable. Using this feature with interfaces
other than the DB9 box may result in
unacceptable voltage loss.
Building DB9 Female Loopback Plugs or Cables
To perform loopback testing of DB9
ports in RS-232 mode, use a female
DB9 connector with the following
pins wired together:
•
Pins 2 to 3
•
Pins 7 to 8
•
Pins 1 to 4 to 6
Note: If you use the +5V Power feature, either remove the
jumper or disconnect the power supply cable before
running the diagnostics. If you do not do so, the
diagnostics fail.
To test DB9 ports in RS-485 mode, obtain two female DB9
connectors and create a cable with the following wiring:
RJ45 Interfaces
The Octacable RJ45 fanouts use RJ45 connectors.
RJ45 Pinouts
The RocketPort 485 uses RJ45 connectors with the pins
numbered as shown below:
Depending on jumper configuration, the pins carry the
following values:
*
Ports 1 and 2 can be either RS-232 or RS-485, while
Ports 3 through 8 are RS-232 only. All RS-232 modem
control signals are present in RS-485 mode, but not
used.
While the RocketPort 485 card can be configured
to 5V, this voltage is not accessible on
the RJ45 connector. Therefore this option should
not be used with the Octacable RJ45.
Pin
RS-232 Signal
RS-485 Signal
1
CD
Not used*
2
RxD
TRX-
3
TxD
TRX+
4
DTR
Not used*
5
Signal ground
Signal ground
6
DSR
Not used*
7
RTS
Not used*
8
CTS
Not used*
9 **
**
Pin 1
Pin 5
Pin 6
Pin 9
Caution
Pin 1
Pin 5
Pin 6
Pin 9
RS-232 (Back View)
Pin
RS-232 Signal
RS-485 Signal
1
RTS
Not used*
2
DTR
Not used*
3
Signal ground
Signal ground
4
TxD
TRX+
5
RxD
TRX-
6
DCD
Not used*
7
DSR
Not used*
8
CTS
Not used*
Pin 1
Pin 5
Pin 6
Pin 9
Pin 1
Pin 5
Pin 6
Pin 9
Pin 2 (TRX-)
Pin 3 (TRX+)
RS-485 (Back View)
Pin 1
Receptacle
1
8
RJ45 Plug
Top View
Cable
Pin 1
Caution