Logical Enterprise Architecture

Logical Architectures include the Software Systems and Network Interfaces which comprise the Control and Information Systems of the Enterprise (See also Physical Architectures).

At the Master Planning level, these are represented by high level dataflow diagrams, which are developed during the Conceptual Engineering Phase, and evolved into more detailed dataflow and function diagrams during the Preliminary Engineering Phase. During Detail Design, these are further developed into actual programs and work processes, and ultimately result in tested and commissioned Operations Phase systems.

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Data flow and system function diagrams are probably the least well standardized of all enterprise development tools, and a large part of the Tools and Standards sections of this web site are devoted to various proprietary and non-proprietary approaches to defining the logical data flows and human roles involved.

We have our own preferences for industrial systems, however the actual standards and tools used are not defined by PERA. In fact, unlike PERA, these are likely to be very industry-specific. Often, these industry-specific tools and standards are more a result of historical development than actual differences in functional requirements. Elimination of some of this "intellectual clutter" represents a major opportunity in the coming years. This will be achieved through rationalization of redundant tools, and pan-industry standards.

Logical Architectures differ widely as a result of the requirements and constraints of each industry, however, there is considerable commonality between similar applications in different industries.

Click Here to view example Logical Architectures for "Generic" Process and Manufacturing Industries, and for specific industries (Note: Many of these links are still "dead" but we are working on it).

 by Gary Rathwell reserved

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