. OPC Unified Architecture Part 10: Programs. Release 1.04. 2017-11-01. , OPC Foundation, 2017.

This technical specification is part 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 details 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 terminal result data. Additionally, it presents examples regarding program diagnostics, security considerations, and the modeling of domain download processes in control systems.