The OPC Router is a modular system. If you want to use it, you need the Basic module, plus theplug-in module(s) that enable(s) you to exchange data between your chosen systems.
A single OPC Router PC installation (see the picture below) requires the Basic module and at least one plug-in module. You also need to purchase the Year 1 Support & Maintenance package for the first year. It will automatically be added to your basket. When it has expired or during the first year, you can purchase Support & Maintenance for subsequent years.