W315A/325A
Hardware Connection Description
3-3
Connecting the Power
The PC’s power source should be provided by a UL listed class 2 or “Limited Power Source” (LPS), with external
adaptor output rated at 12 to 48 VDC, with minimum amperage of 1.2 A. If the power is supplied properly, the
“Ready” LED will glow a solid green after a 25 to 30 second delay.
Grounding the Unit
Grounding and wire routing help limit the effects of noise due to electromagnetic interference (EMI). Before
connecting devices, run a ground wire from the ground screw to the grounding surface.
ATTENTION
This product should be mounted to a well-grounded mounting surface such as a metal panel.
SG
: The
Shielded Ground
(sometimes called Protected
Ground) contact is the left most contact of the 3-pin power
terminal block connector when viewed from the angle shown
here. Connect the SG wire to an appropriate grounded metal
surface.
Connecting Data Transmission Cables
In this section, we describe how to connect the W315A/325A embedded computers to the network, serial
devices, and a serial COM terminal.
Connecting to the Network
Plug your network cable into the embedded computer’s Ethernet port. The other end of the cable should be
plugged into your Ethernet network. When the cable is properly connected, the LEDs on the embedded
computer’s Ethernet port will glow to indicate a valid connection.
The 10/100 Mbps Ethernet LAN port accepts 8-pin RJ45 connectors. The following diagram shows the pinouts
for these ports.
The LED indicator on the right glows a solid green color when the
cable is properly connected to a 100 Mbps Ethernet network. The
LED will flash on and off when Ethernet packets are being
transmitted or received.
Pin
Signal
1
ETx+
2
ETx-
3
ERx+
4
–
5
–
6
ERx-
7
–
8
–
The LED indicator on the left glows a solid orange color when the
cable is properly connected to a 10 Mbps Ethernet network. The
LED will flash on and off when Ethernet packets are being
transmitted or received.
