Covers real-time batch, discrete and continuous process automation systems. Defines regulatory, event-driven and time-driven control system actions. Encompasses both digital and analog control devices in addition to non-control actions (for example, operator messages and batch end reports).
- Encompasses both normal and abnormal operational requirements of systems and shows the interactions between them.
- Uses a set of terms that relate directly to the languages commonly used by plant operators.
- Excludes interactions with higher-level systems.
- Establish functional requirements specifications for control software documentation that covers the classes of industrial automation equipment and systems
- Provide techniques for documenting control system software. The software to be generated is a function of the computer system chosen for a particular project.
- Provide a basis for validation of run-time application software after it is developed and tested to ensure that the initial requirement specification has been met.
- Can be used for control software definition, design, testing and validation.
Source: http://www.isa.org
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