Led Indicators; About Serial Port Cabling; Serial Port Pinouts - Digi CM User Manual

LED Indicators

Use the LED indicators to confirm your attachment to the network and that the
Digi CM is able to send and receive data.

About Serial Port Cabling

The Digi CM simplifies cabling. The RJ-45 8-pin configuration matches all
SUN and Cisco RJ-45 console port configurations, enabling CAT 5 cabling
without pinout concerns. Three DB-25 and one DB-9 adapters come in the
package. A DB-25 male, a DB-25 female, and a DB-9 adapter support console
management applications. A DB-25 male adapter provides a modem
connection. See the cable adapter information that follows later in this chapter.

Serial Port Pinouts

The Digi CM uses an RJ-45 connector for serial ports. Pin assignments are
listed in the following table.
Chapter 17
LED
Power
System Ready
PC
100Mbps
Ethernet LINK
Act
In use
Serial
port*
Rx/Tx
*Not available on the Digi CM 48
Note: The cable length restrictions common to RS-232 cables apply to the Digi CM
serial cable as well.
Pin
1
2
3
4
5
6
7
8
Function
On when power is supplied
On when system is ready to run
On when a PC device is running
On when 100Base-TX connection is detected
On when connected to an Ethernet network
Blinks when there is activity on the Ethernet port
On when the serial port is ready to run
Blinks when there is traffic on the serial port
Description
CTS
DSR
RxD
GND
DCD Note: Inbound signal can also be
used as a second ground.
TxD
DTR
RTS
Hardware Information
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