Specifications

Chapter 2 Configuration and Troubleshooting Tools
Niagara Configuration Tools
Niagara Release 2.3
Niagara Networking & Connectivity Guide Revised: May 22, 2002
2–13
You can either purchase a null modem adapter from us, or use the information in
Table 2-16 to assemble the DB-9 to RJ-45 adapter. Do not use a third-party
ready-made adapter unless you can verify that it has been pinned out in the manner
specified in Table 2-16.
The following figures provide a pin reference for both DB-9 (female) and RJ-45
(female) connectors.
Note If the serial port on your serial device has a DB-25 male connector instead of the
DB-9 male, use a standard DB-9 female to DB-25 female adapter (or adapter cable)
to make the conversion.
Table 2-16 DB-9 to RJ-45 adapter pinouts.
Type of Adapter
DB-9
Female Pin Signal
RJ-45
Female Pin
Straight-through (for
connecting to a DCE
device)
1 DCD Data carrier detect 5
2RXDReceive data6
3TXDTransmit data3
4 DTR Data terminal ready 1
5 GND Ground 4
6 DSR Data set ready 8
7 RTS Request to send 2
8 CTS Clear to send 7
9 not used on the JACE-4
Null Modem
(for connecting to another
DTE device)
1 DCD Data carrier detect 5
2TXDTransmit data3
3RXDReceive data6
4 DSR Data set ready 8
5 GND Ground 4
6 DTR Data terminal ready 1
7 CTS Clear to send 7
8 RTS Request to send 2
9 not used on the JACE-4
Figure 2-8 DB-9 female pin reference. Figure 2-9 RJ-45 female pin reference.
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