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Equipment Module Overview

An equipment module (EM) is a functional stand-alone grouping of all necessary processing and control equipment required to perform a finite number of specific minor processing activities.  The equipment grouping is made up of control modules (CM), subordinate equipment modules, instruments and vessels.

The primary purpose of the EM is to coordinate the functions of the processing and control equipment it contains.  The EM does not interact directly with I/O.  The EM itself is commanded by an operator, a unit procedure, a unit phase, a batch phase or another equipment module.  The EM is the container for performing the different elements of procedural logic required to achieve the process task (i.e. Major Processing task of a Unit).


  • Acquire 0 or more (32) CMs
  • Interlock 0 or more (48) CMs
  • Coordinate with 0 or more (8) EMs
  • Use services of other EMs (or providers)
  • Monitors 0 or 1 instrument
  • Implements 1 or more (30) tasks (aka equipment phases)
  • Tasks may be configured as exclusive or inclusive
  • Uses 3 stage procedural control for each task
  • Contains 0 or more (20) Control Parameters
  • Contains 0 or more (20) Report Parameters
  • Contains 0 or more (16) Tags
  • Has a fixed starting time
  • Runs to completion (optional – not required for continuous process or unit process EMs)
  • Made up of sequence of actions
  • Has Abnormal Condition Management (ACM) (i.e. Exception Handling)
  • Does not interface directly with I/O
  • Collects data (The unit has tags to record information collected by the EM but not implemented)
  • Has manual interface
Updated on December 14, 2018

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