profinet

Sep 9

PROFINET Communications, Mandatory; Wires, Optional!

I would like to use PROFINET, but my application is an Automated Guided Vehicle (AGV). It’s battery powered with no preset track. I would like to use PROFINET, but the machine rotates and slip rings wear out too fast. If these are your applications, fear not. Since PROFINET uses plain old IEEE 802.3 Ethernet, it…
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Sep 3

8 Go-To Resources for PROFINET

1. Marketing Flyer: PROFINET. A brief, high-level overview of PROFINET. Yes it has “marketing” in the title, so you can skip this one if you want to. 2. System Description: PROFINET Technology and Application. Twenty eight pages of detailed introduction to PROFINET: models and engineering, basic functions, optional functions, legacy fieldbus integration, topologies, product development…
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Aug 26

4 More PROFINET Myths and the Much Better Realities

Myth 3: PROFINET requires a proprietary chip. Reality: A standard Ethernet controller chip can be used for PROFINET, even for real-time data. Just add a PROFINET stack (the software that knows how to direct the PROFINET message as well as the TCP/IP traffic). In order to achieve motion control, PROFINET does require that the stack…
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Aug 20

2 PROFINET Myths and the Much Better Realities

Myth 1: PROFINET is PROFIBUS on Ethernet. Reality: Although it builds on the concepts of PROFIBUS, PROFINET is a new protocol, tailored to Ethernet capabilities. Other Industrial Ethernets have just wrapped up their old messages in a TCP/IP or UDP/IP wrapper and called it an Industrial Ethernet. PROFINET built the protocol from the ground up…
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Jun 17

PROFINET: 6 Little Known Facts and Why They Matter

There are some well-known facts about PROFINET.  Most people know them:  PROFINET is suitable in the three major application spaces: factory, process, and motion control.  PROFINET is fast.  PROFINET is complete.  Part of what makes PROFINET complete is “the little known things.”  Here are six features (“little things”) of PROFINET that you probably were unaware…
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Jun 10

Wireless PROFINET Questions – Asked and Answered

I enjoy corresponding with editors about all things PROFINET and PROFIBUS.  But sometimes they don’t get to use my input.  So all my stuff wound up on the editing room floor for a recent article on wireless.  To save my good stuff from extinction, here are wireless questions, asked and answered. Before you begin, remember…
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Jun 3

Managed Ethernet Switches as PROFINET IO

You can use either a managed or an unmanaged Ethernet switch for PROFINET. Of course, if downtime is expensive for you, you will easily justify using a managed switch. (See past post.)  You can use an OPC-SNMP server to read information from a managed switch and display it and alarm it in an HMI. It’s…
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May 28

Managed or Unmanaged Switch for PROFINET

Should I use a managed switch or an unmanaged switch with PROFINET? Yes. Yes, you should use either a managed or an unmanaged Ethernet switch with PROFINET. An unmanaged switch has no built-in intelligence except to send incoming Ethernet frames out the right port – the port that the destination device is connected to. And…
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May 6

Five Things You Should Tell Your Boss about PROFINET

What should you tell your boss about PROFINET? Here’s the list, but the five things all come back to saving money. Maybe that’s why we often see PROFINET “accidentally” spelled PROFITNET. Legacy protection: you can update a system without doing a rip-and-replace of the existing fieldbus. Just use a PROFINET proxy to seamlessly integrate the…
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Apr 30

Why use an IP-Address?

Did you catch the new White Paper we posted? If not, here it is: PROFINET for network geeks (and those who want to be). Done yet? TL;DR (it’s only four pages!): The White Paper discusses the seven-layer ISO/OSI Reference Model, as well as how in the Ethernet world, these seven layers collapse down into four. It…
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