Rts Connector Pinouts; Db9 Connector Pinouts; Building Additional Db9 Loopback Plugs; Rj45 Connector Pinouts - Comtrol DEVICE MASTER RTS Hardware Installation And Configuration

RTS Connector Pinouts

DB9 Connector
Pinouts
Building Additional
DB9 Loopback Plugs
RJ45 Connector
Pinouts
Connecting Serial Devices
Use the appropriate subsection if you need information about the serial connectors
on the RTS, including:
• Signal information for each communications mode.
• How to build a loopback plug or cable to test a port.
Use the following pinout information for the DB9 serial port connectors on the
DeviceMaster RTS.
RS-232
GND
RI
DTR
CTS
TxD
RTS
RxD
DSR
CD
Pin 1
Pin 6
DB9 Male
Loopback connectors are DB9 female serial port plugs, with pins wired together as
shown, that are used in conjunction with application software to test serial ports.
The DeviceMaster RTS is shipped with a a single loopback plug (RS-232/422).
Note: Drivers for Windows 98 and Windows NT are bundled with the Test
Terminal (WCOM32) program. Linux users can use MiniCom. See the NS-
Link driver documentation for your operating system for information about
using these applications.
Wire the following pins together to build additional plugs or replace a missing RS-
232 loopback plug:
• Pins 1 to 4 to 6
Pin 1
• Pins 2 to 3
• Pins 7 to 8 to 9
Wire the following pins together for an RS-422 loopback plug:
• Pins 2 to 3
• Pins 7 to 8
Use the following pinout information for the RJ45 serial port connectors on the
DeviceMaster RTS.
RS-232
Pin 1
RJ45
RS-422
Not used*
Not used
Not used
RxD+
TxD-
TxD+
RxD-
Not used
Not used
Pin 1 Pin 6
DB9 Male
* Pin 5 is tied to ground on the board,
Pin 5
RS-232 Only
(Back View)
Pin 9
Pin 6
Pin 5
Pin 1
Pin 9
Pin 6
RS-422
Pin 1
RTS TxD+
DTR Not used
Signal GND Not used**
TxD TxD-
RxD RxD-
DCD Not used
DSR Not used
CTS RxD+
RJ45
RTS Connector Pinouts
RS-485
Not used*
Not used
Not used
Not used
TxD/RxD-
TxD/RxD+
Not used
Not used
Not used
Pin 6
Pin 1
DB9 Male
but is not used in the cable.
The RS-232 loopback plug
also works for RS-422.
RS-422 Only
(Back View)
RS-485
Pin 1
TxD/RxD+
Not used
Not used**
TxD/RxD-
Not used
Not used
Not used
Not used
RJ45
** Pin 3 is tied to ground on the board,
but is not used in the cable.
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