Discovery Services allow OPC UA Applications to learn about other OPC UA Applications in a system and the necessary details on how to connect to them.
OPC UA defines three levels of dedicated Discovery Servers:
- Local Discover Servery (LDS)
- Local Discovery Server with multicast extension (LDS-ME)
- Global Discovery Server (GDS)
OPC 10000-12 describes how to use the Discovery services with dedicated Discovery Servers.