Digi Edgeport/1i, Edgeport/2i, Edgeport/2s MEI, Edgeport/4s MEI, Edgeport/4s DC Isolated Installation Manual
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Edgeport
USB EXPANSION
MODULES
INDUSTRIAL
Installation
Guide
®
Models:
Edgeport/1i
Edgeport/2i
Edgeport/2s MEI
Edgeport/4s MEI
Edgeport/4s DC Isolated
Edgeport/8s MEI
www.digi.com
Table of Contents
Table of Contents ...............................................................................................2
Edgeport/1i .........................................................................................................1
Edgeport/2i .........................................................................................................2
Edgeport/2s MEI, Edgeport/4s MEI,Edgeport/4s Isolated, Edgeport/8s MEI ...4
Edgeport Driver Installation ..............................................................................6
Interpreting the System Status Light ..................................................................6
Mounting Diagrams ...........................................................................................7
The Edgeport Utility Program ...........................................................................8
Understanding Hubs.........................................................................................14
Regulatory & Other Information .....................................................................15
Edgeport/1i
Edgeport USB-to-Serial Converters from Digi International provide high-speed serial connectivity
via USB port expansion for Windows 2003 Server, 2000, XP, NT 4.0, 98, SE, and Me applications.
Edgeport/1i provides one RS-422/485 serial DB-9 port. For more detailed information, as well as the
latest manual and technical updates, visit www.digi.com.
Cabling Edgeport
USB Connection
Type A Type B
Plug the Type A (flat) end of the USB cable into the USB port located in the back of your PC or into
an available USB port on a standard hub or into a Digi International Hubport . Plug the Type B
(square) end of the USB cable into the Edgeport.
RS422/485 Serial Connection
The Edgeport/1i supports RS422/RS485 protocol. To configure the features of RS-422/485
communication on the Edgeport/1i, you will short or leave unconnected certain pins at the DB9
connector of the cable. See the following pin assignment:
3 TA (T-) transmit data negative
7 TB (T+) transmit data positive
8 RA (R-) receive data negative
4 RB (R+) receive data positive
5 signal ground
2 no connect
For "jumper wire" based mode configuration, use the following pins:
1 full and half duplex
6 echo on and off
9 line termination
The user can switch on and off the following features:
Line termination (120 ohm): To enable the line termination resistor, the user connects pin 9 to pin 8.
To disable line termination, the user leaves pin 9 unconnected.
Full Duplex and Half Duplex: For Full Duplex operation, pin 1 is left unconnected. For Half Duplex
operation, the user shorts pin 1 to pin 5 (GND) at the cable connector.
Echo On and Echo Off: For Echo On mode, pin 6 is left unconnected. For Echo Off mode, the user
shorts pin 6 to pin 5 (GND) at the cable connector.
If the drivers are not already installed, go to "Edgeport Driver Installation‖ starting on page 6.
Edgeport Industrial Installation Guide (90000409 Rev. J) – Page 1
Edgeport/2i
Edgeport USB-to-Serial Converters from Digi International provide high-speed serial connectivity via
USB port expansion for Windows 2000, XP, NT 4.0, 98, SE, and Me applications. Edgeport/2i
provides a combination of up to two RS-422 and/or RS-485 serial DB-9 ports. For more detailed
information, as well as the latest manual and technical updates, visit www.digi.com.
Cabling Edgeport
USB Connection
Type A Type B
Plug the Type A (flat) end of the USB cable into the USB port located in the back of your PC or into
an available USB port on a standard hub or into a Digi International Hubport. Plug the Type B (square)
end of the USB cable into the Edgeport.
RS422/485 Serial Connection
Cable Connections (DB9 Female) for Full Duplex
3 TA (T-) transmit data negative
7 TB (T+) transmit data positive
8 RA (R-) receive data negative
4 RB (R+) receive data positive
5 signal ground
1, 2, 6, 9 no connect
NOTE: For full duplex (in the above diagram) the differential pair TA and TB should be together in
one twisted pair and RA and RB should be together in another twisted pair.
Cable Connections (DB9 Female) for Half Duplex
3 TA (T-) transmit data negative
7 TB (T+) transmit data positive
8 RA (R-) receive data negative
4 RB (R+) receive data positive
5 signal ground
1, 2, 6, 9 no connect
NOTE: Half duplex contains only one twisted pair.
Edgeport Industrial Installation Guide (90000409 Rev. J) – Page 2
Figure 1: Two Position DIP Switch
1 2
DS1: ON signal ground short to chassis
ground
OFF signal ground isolated from chassis
ground
DS2: not used
Configuring the DIP Switches
Figure 2: Eight Position DIP Switch
1 2 3 4 5 6 7 8
ON OFF
1. echo disabled 1. echo enabled
2. half duplex 2. full duplex
3. terminating 3. no terminating
resistor resistor
4. ---------- 4. set to OFF
5. set to ON 5. ----------
6. set to ON 6. ----------
7. not used 7. not used
8. not used 8. not used
Figure 3: Various Configurations for the Edgeport/2i DIP Switches
X X
Option #1: RS-422 to RS-422
X X
Option #2: RS-485 Half Duplex
End Unit with Terminating Resistor
X X
Option #3: RS-485 Half Duplex
Middle Unit
X X
Option #5: RS-485 Full Duplex
End Unit, Slave
X X
Option #6: RS-485 Full Duplex
Middle Unit, Master
X X
Option #4: RS-485 Full Duplex
End Unit, Master
X X
Option #7: RS-485 Full Duplex
Middle Unit, Slave
Key: on user’s chioce
off X doesn’t matter
Two Position Switch
The two position DIP switch, located on the back
panel, connects the signal ground to chassis ground.
IMPORTANT: Do not connect signal ground to
chassis ground on more than one location in order to
prevent ground loops and potentially high currents
(figure 1).
Eight Position Switch
The Edgeport/2i also has two sets of eight position DIP switches,
located on the back panel next to their corresponding serial port.
Figure 2 shows what each switch selects in the ON and OFF
positions. Consult the diagrams in figure 3 for various
configuration options. For more configuration information, go to
the documentation section of our web site at
www.digi.com/support. If the drivers are not already installed, go
to "Edgeport Driver Installation‖ starting on page 6.
Edgeport Industrial Installation Guide (90000409 Rev. J) – Page 3
Edgeport/2s MEI, Edgeport/4s MEI,
Edgeport/4s Isolated, Edgeport/8s MEI
Edgeport USB-to-Serial Converters from Digi International provide high-speed serial connectivity via
USB port expansion for Windows 2000, XP, NT 4.0, 98, 95, SE, and Me applications. Edgeport/2s
MEI, Edgeport/4s MEI and Edgeport/8s MEI provide a combination of up to two, four or eight
(respectively) RS-232 and/or RS-422 and/or RS-485 serial DB-9 ports. For more detailed information,
as well as the latest manual and technical updates, visit www.digi.com.
The Isolated version has 2KV DC isolation between all of its ports including the serial ports and the
USB port.
Cabling Edgeport
USB Connection
Type A Type B
Plug the Type A (flat) end of the USB cable into the USB port located in the back of your PC or into
an available USB port on a standard hub or into a Digi International Hubport. Plug the Type B (square)
end of the USB cable into the Edgeport.
Cable Connections (DB9 Female) for Full Duplex
3 TA (T-) transmit data negative
7 TB (T+) transmit data positive
8 RA (R-) receive data negative
4 RB (R+) receive data positive
5 signal ground
1, 2, 6, 9 no connect
NOTE: For full duplex (in the above diagram) the differential pair TA and TB should be together in
one twisted pair and RA and RB should be together in another twisted pair.
Cable Connections (DB9 Female) for Half Duplex
3 TA (T-) transmit data negative
7 TB (T+) transmit data positive
8 RA (R-) receive data negative
4 RB (R+) receive data positive
5 signal ground
1, 2, 6, 9 no connect
NOTE: Half duplex contains only one twisted pair.
Edgeport Industrial Installation Guide (90000409 Rev. J) – Page 4
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