Loading
Magazine |
Recent ActivityRecent Activity

The Basics of Industrial Gateways

Get a quick tutorial on gateways and the types of common industrial communication protocols, and how they can be used in mix-protocol environments.

Share This:

LinkedInLinkedIn
XX
FacebookFacebook
PrintPrint
EmailEmail
Sheet metal laser cutting machine throwing sparks.

By Spectrum Controls Inc.

Editor’s Note    This article is excerpted from the white paper, “Industrial Gateways: Bridging the Communications Gap,” from Spectrum Controls Inc. Download the full paper at https://tinyurl.com/mryt6a9s to learn how protocols have changed over time, factors for expanding an application, considerations for replacing or upgrading gateways, challenges of typical gateways, benefits of using gateways in a PLC network, and how to choose the right one for the application.

In our evolving automation landscape, the transition toward smart factories is both a goal and a challenge, fueled by an ever-growing demand for data accessibility. This is complicated by the prevalence of mixed-protocol environments, featuring both serial and Ethernet communications, each with its own set of variations and complexities.

Let’s explore some aspects of the dynamic landscape of industrial communication protocols, underscoring the indispensable role of gateways in facilitating modern automation in mixed-protocol industrial environments.

Programmable logic controllers (PLCs) play a crucial role in controlling and monitoring various processes. PLCs are specialized computers designed to control manufacturing processes, essentially serving as the brain of the automation system. They receive input data from sensors, process it using programmed logic, and then send commands to actuators, motors, valves and other output devices to control the process.

Keep up with industrial automation trends and technologies
weak chain representing the delicate supply chain
Subscribe to The Journal
Keep up with industrial automation trends and technologies

Subscribe to The JOURNAL from Rockwell Automation and Our PartnerNetwork's digital edition and receive the latest news and information directly to your inbox. Enter your email address and check the box for "The Journal." It's that easy!

Subscribe Now

At the heart of this process is the exchange of data and thus, communication protocols.

Communication protocols are essential for supporting communication between PLCs, associated devices, sensors and other components within the industrial system. However, various communication protocols are used depending on the specific requirements of the application. Looking solely at a Rockwell Automation-supported plant, some common protocols include: DF1™, Modbus™ RTU, Modbus TCP, and EtherNet/IP™. Individually, these protocols facilitate seamless communication between PLCs, devices and sensors, but when combined in a single plant, they can introduce unintended communication challenges. Many of these challenges can be alleviated tby using a protocol gateway.

What is a Gateway?

A gateway is a communications device that extracts data from one device and puts it into another device when the devices have dissimilar communications protocols. They’ve been around for some time now and all operate on the same basic principle: gather data from one device and move it to another.

Different Applications Bring Different Needs

Given the various communication protocols and their differing physical medium, creating or expanding an automation system can quickly become complicated, because different applications have different needs. Consider the four protocols previously mentioned, and there are six possible communication scenarios:

Download the White Paper
Industrial Gateways: Bridging the Communications Gap

Visit https://tinyurl.com/mryt6a9s to download the full white paper, “Industrial Gateways: Bridging the Communications Gap,” from Spectrum Controls Inc. Learn how protocols have changed over time, factors for expanding an application, considerations for replacing or upgrading gateways, challenges of typical gateways, benefits of using gateways in a PLC network, and how to choose the right one for the application.

Download Now
  1. DF1 to Modbus RTU.
  2. DF1 to Modbus TCP.
  3. DF1 to EtherNet/IP.
  4. Modbus RTU to Modbus TCP.
  5. Modbus RTU to EtherNet/IP.
  6. Modbus TCP to EtherNet/IP.

Situations only get more complicated when accounting for differences like RS-232 or RS-485, half-duplex or full-duplex, and serial or Ethernet. While the existence of multiple protocols in industrial automation is nothing new, it’s useful to understand the factors that create these multiprotocol environments.

Spectrum Controls Inc., based in Bellevue, Washington, is a Rockwell Automation Technology Partner. The company builds Rockwell Automation-compatible I/O modules, industrial LED displays and communication protocol gateways. Its Universal Industrial Gateway has 12 built-in protocols; its Universal I/O is available on 9 platforms.

 

Like this article? Sign up for the digital magazine (4X/year) and e-newsletter from The Journal From Rockwell Automation and Our PartnerNetwork and get articles like this delivered to your inbox.

 

 

 

The Journal From Rockwell Automation and Our PartnerNetwork™ is published by Endeavor Business Media.

Topics: The Journal Essential Components Smart Devices
Recommended for You
Loading
  1. Chevron LeftChevron Left Rockwell Automation Home Chevron RightChevron Right
  2. Chevron LeftChevron Left Com... Chevron RightChevron Right
  3. Chevron LeftChevron Left News Chevron RightChevron Right
  4. Chevron LeftChevron Left The Journal Chevron RightChevron Right
  5. Chevron LeftChevron Left The Basics of Industrial Gateways Chevron RightChevron Right
Please update your cookie preferences to continue.
This feature requires cookies to enhance your experience. Please update your preferences to allow for these cookies:
  • Social Media Cookies
  • Functional Cookies
  • Performance Cookies
  • Marketing Cookies
  • All Cookies
You can update your preferences at any time. For more information please see our {0} Privacy Policy
CloseClose