Edgeport Industrial Installation Guide (90000409 Rev. C) – Page 4
Figure 1: Two Position DIP Switch
1 2
DS1:
h
ON signal ground short to chassis
ground
i
OFF signal ground isolated from chassis
ground
DS2:
not used
Edgeport/4i, Edgeport/8i
Edgeport USB-to-Serial Converters from Inside Out Networks provide high-speed serial
connectivity via USB port expansion for Windows 2000, XP, NT 4.0, 98, 95, SE, and Me
applications. Edgeport/4i and Edgeport/8i provide four or eight RS-422 serial DB-9 ports
respectively. For more detailed information, as well as the latest manual and technical updates,
visit
www.ionetworks.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 an Inside Out Networks Hubport. Plug the
Type B (square) end of the USB cable into the Edgeport.
Cable Connections (DB9 Female) for Full Duplex
3
g
TA (T-) transmit data negative
7
g
TB (T+) transmit data positive
8
g
RA (R-) receive data negative
4
g
RB (R+) receive data positive
5
g
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 R
A
and R
B
should be together in another twisted pair.
Configuring the DIP Switch
Two Position Switch (Edgeport/4i)
This 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).
After setting the two position DIP switch on the
Edgeport/4i, go to “Edgeport Driver Installation” on page
8. For the Edgeport/2i, continue with the next section.
If the drivers are not already installed, go to "Edgeport Driver Installation” starting on page 8.
