Shop

Artificial Intelligence Notice: ISA prohibits the entry of any ISA intellectual property (“ISA IP”), including standards, publications, training or other materials into any form of Artificial Intelligence (AI) tools, such as ChatGPT. Additionally, creating derivatives of ISA IP using AI is also prohibited without express written permission from ISA’s CEO. In the case of such use, ISA will suspend a licensee’s access to ISA IP, and further legal action will be considered. Please review ISA's policies for Use of AI Tools, Intellectual Property and Terms and Conditions for further information.

Important Notice: Print books are temporarily unavailable. As of 12 August 2025, print books are no longer available for purchase on isa.org, but beginning 1 January 2026, they will be available for purchase through our publishing partner, Wiley. Kindle and ePub formats are still available via the links on each book's product page on isa.org. Learn More.

Cancel
SM

ISA Certified Automation Professional (CAP) program

  • CAP

Summary

ISA Certified Automation Professional (CAP) program

Certified Automation Professionals (CAPs) are responsible for the direction, design, and deployment of systems and equipment for manufacturing and control systems.

CAP question

Which of the following explains why ANSI/ISA-88.01-1995 (S88) treats control modules as a separate entity?

A. A control module is inextricable from its equipment.
B. Each control module is encapsulated so it can be reused.
C. Each control module has a phase and directs a set of final control elements.
D. A control module is partitioned to prevent the phase from commanding other control modules within an equipment module.

CAP Answer

The correct answer is B, each control module is encapsulated so it can be reused. One of the major documented benefits of ISA-88 is its definition of separate equipment module and control module functions. This allows code for a single control module, for example, a two-way on/off valve, to be programmed, validated, and then reused for each instance of a two-way on/off valve in the process. These reusable control modules streamline code development, simplify documentation, and allow for consistent operator interactions.

Reference: Trevathan, Vernon L., A Guide to the Automation Body of Knowledge, Second Edition, ISA, 2006.

Reader Feedback

We want to hear from you! Please send us your comments and questions about this topic to InTechmagazine@isa.org.



Like This Article?

Subscribe Now!

About The Author