In this exercise, let's create an IEC 104 Slave Driver to provide data collected using the IEC 61850 protocol, thus composing a gateway of protocols. In addition to provide collected data, let's create Tags to send commands using the IEC 870-104 protocol. The application to simulate a COS (IEC 104 Master) can be found on the article about gateways on Elipse Software's Knowledgebase.