ISA CAP Automation Design & Integration 2

Question 1

What is the primary purpose of a Functional Design Specification (FDS) in an automation project?

Accepted Answer

Describe how the system will fulfill requirements at a functional level

Answer

An FDS bridges the gap between user requirements and detailed design by describing how the system will behave and fulfill those requirements.

Question 2

When integrating a third-party device into a DCS via Modbus RTU, what must be defined to ensure correct data exchange?

Accepted Answer

Register addresses, data types, and polling frequency

Answer

Modbus RTU integration requires knowing the device's register map, data types (e.g., 16-bit integer vs. float), and appropriate polling intervals to ensure data integrity.

Question 3

In ISA-88 batch control, what role does a 'Unit' play?

Accepted Answer

An equipment entity capable of making a batch or part of a batch

Answer

Per ISA-88, a Unit is a collection of associated control modules and equipment modules that can carry out a major processing action.

Question 4

Which network topology provides the highest fault tolerance in an industrial automation network?

Accepted Answer

Ring topology with redundant links

Answer

A ring topology with redundant links (such as IEC 62439 HSR or PRP) allows traffic to continue even if a single link or node fails, providing the highest fault tolerance.

Question 5

What does 'marshalling' refer to in the context of automation I/O design?

Accepted Answer

The process of routing field wiring to a central termination point before connecting to controllers

Answer

Marshalling involves collecting and organizing field instrument wiring at marshalling cabinets before routing signals to the appropriate controller I/O cards.

(ISA CAP) ISA Certified Automation Professional Practice Test

(ISA CAP) ISA Certified Automation Professional Practice Test

ISA CAP Automation Design & Integration 2