. OPC Unified Architecture Part 10: Programs. Release 1.05.00. 2021-10-15. , OPC Foundation, 2021.

This technical specification constitutes Part 10 of the OPC Unified Architecture (OPC UA) standard series and defines an information model for managing complex, state-based programs within servers or control systems. The document describes the primary states (Ready, Running, Suspended, Halted) and transitions of the Program Finite State Machine (PFSM), control methods (Start, Suspend, Resume, Halt, Reset), and the transfer of intermediate and final result data. Additionally, it presents examples regarding program diagnostics, security considerations, and the modeling of domain download processes in control systems.