Procedural Control Model - Siemens SIMATIC BATCH Operating Manual

Technological basics complying with ISA-88.01
5.9 ANSI/ISA-88.01 models
5.9.2

Procedural control model

Procedural control model with example – how is it something made?
Equipment phase
An equipment phase is the smallest element of procedural control that can accomplish a
process-oriented task. The purpose of an equipment phase is to define or cause a process-
oriented action.
Characteristics of an equipment phase:
● Can be subdivided into smaller parts in the form of steps and transitions (as described in
IEC 848: 1988).
● A step can cause one or more actions
● The execution of an equipment phase can result in:
– Commands to basic control
– Commands to other equipment phases (either in the same or another equipment entity)
– The collection of data
114
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA