An Introduction to Functions › Basic Properties of Functions › Action Diagrams

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Action Diagrams

Action diagrams specify the processing steps for the program function logic. This is a combination of default (CA 2E supplied) logic and optional user-defined processing logic.

The following table shows which component applies to each function type:

Function Class

Parameters

Device Design

Action Diagrams

Function Options

Device Functions

Database Functions

User Functions

Y

Y

Y

Y

N

N

Y

N

Y,N (1)

Y

Y,N

Y,N (3)

Messages

Function Fields

Y

Y

N

N

N

Y, N (2)

N

N

Built-in Functions

Y

N

N

N
  1. \EXCINTFUN and EXCEXTFUN have action diagrams. EXCUSRSRC and EXCUSRPGM do not have action diagrams.
  2. Only DRV function fields have action diagrams; all other function fields do not.
  3. EXCUSRSRC is the only user function that has no function option.

For more information on action diagrams, see the chapter Modifying Action Diagrams.