Industrial Automation: OT Networks and Instrumentation

Questions and Answers

What is the primary function of input output modules in industrial automation?

To sense the status of real-world conditions and provide input to process controllers (correct)

To process digital signals in real-time

To wirelessly communicate with other devices

To control the physical conditions of a plant or facility

According to the Purdue model, the physical process level is where sensors detect things like flow rate and store them as digital signals inside the processors.

False

What is the traditional method of connecting sensor networks and instrumentation to controllers?

Hardwired electrical signals, such as 4 to 20 milliamps.

In the ISA S99 IEC 62443 standard, the various aspects of an OT network architecture are broken down into its various ____________________ components.

functioning Signup and view all the answers

Match the following terms with their definitions:

Instrumentation = Detection of things like flow rate in real-time Purdue model = A way to break down the various aspects of an OT network architecture Input Output Modules = Digital devices that sense the status of real-world conditions Signup and view all the answers

Many vendors are moving towards bus communications and wireless communications for connecting sensor networks and instrumentation to controllers.

True Signup and view all the answers

Study Notes

Importance of Instrumentation and Output Controllers

Instrumentation and output controllers are essential for managing inputs and outputs in operational technology (OT) networks.
Inputs and outputs are mapped into memory addresses within controllers for effective control and monitoring.

Purdue Model and ISA S99 IEC 62443 Standard

The Purdue model serves as a framework to analyze the architecture of OT networks, based on the ISA S99 IEC 62443 standard.
It categorizes various components of an OT network into functional levels, enhancing understanding and management.

Physical Process Level

At the ground level, sensors monitor conditions such as flow rate.
Detected data is processed in real-time by analog or digital input cards and stored as digital signals within processors.

Input/Output Modules

Input/output modules are digital devices that sense real-world conditions and directly influence physical processes in a facility.
Automation relies on these modules to perceive environmental changes and control processes efficiently.

Traditional vs. Modern Communication Methods

Traditionally, sensor networks utilized hardwired electrical signals (e.g., 4 to 20 milliamps) for connectivity to controllers.
A notable shift towards bus communications and wireless technologies is occurring, allowing for flexible placements of sensors in extensive environments such as warehouses and outdoor facilities.

Module Structure

The module will begin with a focus on wired input/output connections before exploring modern communication pathways.
Hands-on exercises will provide practical experience with instrumentation and output controllers.

Description

This module covers the importance of instrumentation and output controllers in industrial automation, including hands-on exercises and a breakdown of the Purdue model for OT networks according to the ISA S99 IEC 62443 standard.