====== Ethernet Module ======

The Ethernet module provides TCP/IP capabilities to the MOACON.

{{ :moacon:dp-ether:dpether.png?nolink |}}

^LED Descriptions^^
|TX | Transmit|
|RX | Receive|
|ERR | Data/IP Conflict|
|FULL | Full duplex|
|100M | 100Mb Ethernet Enabled|
|LINK | Connection Status|

===== Network Connectivity =====
Ethernet devices are usually connected to one another through a hub or switch. Each device must have a
unique MAC and IP Address. The hub/switch connects all devices to each other forming a local network.

{{ :moacon:dp-ether:dpether1.png?nolink |}}

If connecting several devices to the Internet, typically they all must traverse a gateway and/or router. The
gateway/router has two ports: one connected to the Internet, and one connected to the local network. The
gateway/router must have one unique MAC and IP address for the Internet port, and a separate MAC and IP
address for the local network port. The gateway/router then brokers data back and forth between the
Internet and the local network.

{{ :moacon:dp-ether:dpether2.png?nolink |}}

===== TCP Client-Server Communication =====
TCP Client-Server communication is the typical method in which two nodes on a network communicate with
one another.

A server listens for a connection from a client. When a client connects, the server confirms the connection
from the client. Once the connection is established, they can transmit and receive data to and from one
another.

{{ :moacon:dp-ether:tcpserver_connection.png?nolink |}}

The following diagram illustrates how a network might look with a PC as a server, and several MOACONs as
clients.

{{ :moacon:dp-ether:tcpip2.png?nolink |}}

====== Installing Ethernet Module  ======

Only one of Ethernet Module  can be installed at a time. 

{{ :moacon:dp-comm2:specialmodule_location.png?nolink |}}

As shown in the image above, Ethernet Module can be installed in any vacant slot on the 10-slot
main board. Ethernet Module cannot be installed in the expansion boards.

**WARNING: Do not plug or unplug modules while the power is on.**

[[moacon:index|MOACON - Modular Programmable Automation Controller (PAC)]]