User`s manual

WE-2100T Series User’s Manual Getting Started
3-4
The bottom row of pins is for connecting a 5V power supply; the next row up is for connecting a
3.3V power supply. Digital I/O pins are located on the right side. The top row of pins is for
grounding.
Connecting to the Network
When developing your application, you may wish to use Ethernet to configure the WE-2100T,
especially if your wireless LAN is not functional yet. You may connect to the network using the
evaluation board’s RJ45 Ethernet port. In order to use the LAN connection, make sure the network
cable is already plugged in before the unit is powered on.
After power is connected in the next step, the RJ45 connector will indicate a valid connection to
the Ethernet as follows:
LAN
A green LED indicator indicates a valid 100 Mbps Ethernet network connection
and will flicker as data is being transmitted.
LAN
A yellow LED indicator indicates a valid 10 Mbps Ethernet network connection
and will flicker as data is being transmitted.
Connecting the Power
Connect the 12 to 48 VDC power line to the power jack on the evaluation board.
Connecting to a Serial Device
Use a serial cable to connect the serial device to the data port, P2, on the evaluation board. (P1 is
the console port, which is used for the serial console.)
DI/O Test Settings
The WE-2100T includes 9 digital I/O channels. Each digital I/O channel is a GPIO (General
Purpose I/O) channel that can be set to “digital output” or “digital input” mode by software. When
developing your own applications, be aware of the voltage limits. The output current is 1 mA
Min. Max. Unit Conditions
Low-level
input voltage
Maximum voltage when DI is set
to “Low” status. ----- 0.8 V
High-level
input voltage
Minimum voltage when DI is set
to “High” status. 2 ----- V
Low-level
input voltage
Maximum voltage when DO is set
to “Low” status. ----- 0.4 V