Hardware requirements

Temporal requirements

Description medium

User Human Machine Interface

Measuring

Is bound on sensor/ transmitter, watchdog timer

Sampling theorem

Embedded system at development

Plant operator Operating staff Service staff

Setting, switching

Is bound on actuator, watchdog timer

Sampling theorem

Embedded system at development

Plant operator Operating staff Service staff

Regulating, controlling

Not hardware bound, watchdog timer

Sampling theorem

Programmable by master, technician, ATor DE, e.g. IEC 61131-3

Plant operator Operating staff Service staff

Archiving

Not hardware bound

With timestamp

Such as IT systems

Plant operator Operating staff Service staff

Registering

Not hardware bound

With timestamp

Such as IT systems

Plant operator Operating staff Service staff

Prompt

Industrial capability

In human dynamics (1/2 ms)

Programmable by master, technician, ATor DE, e.g. IEC 61131-3

Plant operator Operating staff Service staff

Manipulating

Industrial capability

In human dynamics (1/2 ms)

Programmable by master, technician, ATor DE, e.g. IEC 61131-3

Plant operator Operating staff Service staff

Saving

Special requirements

Sampling theorem

Specialists, TÜV, IEC 61508

Plant operator Operating staff Service staff