Comtrol RocketPort 485 Installazione dell'hardware - Pagina 4

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DB25 Interface Connectors
Use the following subsections for DB25 interface
connectors. The Quad- and Octacable DB25 fanouts use
DB25 male connectors.
Note: Although the RocketPort 485 card supports eight
ports, if you have a quadcable connected, you will
only have four port available for use.
DB25 Pinouts
The following table and figure illustrates the DB25
connectors:
Pin 1
Pin 14
Depending on jumper configuration, the pins carry the
following values:
Pin
RS-232 Signal
1
Not used
2
TxD
3
RxD
4
RTS
5
CTS
6
DSR
7
Signal ground
8
DCD
9-19
Not used
20
DTR
21
Not used
22
See Caution below
23-25
Not used
*
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.
Although the RocketPort 485 is designed to
provide +5V on Ports 3 - 8, do not use the +5V
power option with the Quad/Octacable. Using
this feature with interfaces other than the DB9
Caution
box may result in unacceptable voltage loss.
RocketPort® 485 Hardware Installation
Pin 13
Pin 25
RS-485 Signal
Not used
TRX+
TRX-
Not used*
Not used*
Not used*
Signal ground
Not used*
Not used
Not used*
Not used
Not used
Building DB25 Female Loopback Plugs or Cables
To perform loopback
testing of DB25 ports in
RS-232 mode, obtain or
create a female DB25
connector with the
following pins wired
together:
•
Pins 2 to 3
•
Pins 4 to 5 to 22
•
Pins 6 to 8 to 20
Note: (The connector illustrated is the standard DB25F
supplied by Comtrol for use with RS-232/422
interfaces.)
To test DB25 ports in RS-485 mode, obtain two female
DB25 connectors and create the cable shown below:
Pin 3 (TRX-)
Pin 2 (TRX+)
Pin 1
Pin 13
Pin 14
Pin 25
RS-485 (Back View)
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 port available for use.
DB9 Pinouts
Each connector is a DB9 male, with pins numbered as
shown below:
Pin 1
Pin 6
Depending on jumper configuration, the pins carry the
following values:
Pin
RS-232 Signal
1
CD
2
RxD
3
TxD
4
DTR
5
Signal ground
6
DSR
7
RTS
8
CTS
9
**
Pin 1
Pin 13
Pin 14
Pin 25
RS-232 Only (Back View)
Pin 1
Pin 13
Pin 14
Pin 25
Pin 5
Pin 9
RS-485 Signal
Not used*
TRX-
TRX+
Not used*
Signal ground
Not used*
Not used*
Not used*
**
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