Siemens SIMATIC BATCH Operating Manual page 1140

Glossary
Unit
A grouping of related control modules and/or equipment modules and their equipment in which
one or more larger processing activities can be performed.
Only one batch is ever processed at any one time in a unit. Units generally operate independent
of each other. Examples of larger units include caustic soda, carbene addition, extraction,
distillation.
Unit class
Each unit can be assigned to a unit class in the plant hierarchy.
In the BATCH Recipe Editor, the candidates that can be selected as the unit and the possible
associated phases (EOP/EPH) is restricted to a unit class. The great advantage of this is that
when you convert the master recipe to the control recipe, the actual unit allocation is always
successful since the master recipe contains only the permitted unit candidates.
Unit of measure
The unit of measure is a dimension or quantity with a specific value. Examples of units of
measure: 1 m, 1 kg, 1 €.
Unit procedure
A strategy for executing a related process within a unit. It consists of a sequence of operations
and the required algorithms for triggering, organizing and controlling these operations.
Unit recipe
A part of a (control) recipe that uniquely specifies the sequence of production requirements
for a unit. The unit recipe contains the unit procedure and the corresponding material and
production parameters, recipe header, requirements of the equipment and other information.
WinCC
WinCC is a neutral Windows-based system for solving visualization and process control tasks
in production and process automation.
WinCC provides function modules designed for industry for graphic representation,
messaging, archiving and logging. With its powerful process interface, fast picture updating
and secure data archiving, it ensures high availability.
1140
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA