OPC 10000-3, OPC Unified Architecture - Part 3: Address Space Model

OPC 10000-4, OPC Unified Architecture - Part 4: Services

OPC 10000-5, OPC Unified Architecture - Part 5: Information Model

OPC 10000-6, OPC Unified Architecture - Part 6: Mappings

OPC 10000-8, OPC Unified Architecture - Part 8: Data Access

OPC 10000-100, OPC Unified Architecture - Part 100: Devices