Profiblog

Nov 11

What Is the Difference Between PROFIBUS DP and PA?

There are two flavors of PROFIBUS: PROFIBUS Decentralized Peripherals (DP) and Process Automation (PA). Each type targets different applications. PROFIBUS PA is used in process automation. The physical layer of PROFIBUS PA is Manchester Encoded Bus Powered (MBP), and the physical layer for PROFIBUS DP is RS-485. Even though a different physical layer is employed,…

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Oct 20

How Many Nodes Can Be Connected on a PROFIBUS Network?

“How many devices or nodes can be on a PROFIBUS network?” is a common question for PROFIBUS beginners. This information is critical when designing a PROFIBUS network. In PROFIBUS networks, each segment can have a maximum of 32 nodes, counting master and devices. The maximum number of nodes with addresses in the overall network is…

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Oct 15

Fieldbus vs 4-20 mA

This blog post explains one of the most dramatic evolutions in Industrial Automation: The transition from 4-20 mA to digital Fieldbuses. It compares the two and highlights key benefits and new business models arising from the implementation of fieldbuses. The Difference Between 4–20 mA and Digital Fieldbuses The factory floor has evolved dramatically over the…

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Sep 28

10 Reasons to Choose PROFINET

PROFINET is the leading and most advanced communication protocol for automation. Currently, in 2020, there are over 32 million PROFINET nodes installed. This article contains 10 reasons or highlights to choose PROFINET for your product or automation project. 1.- Flexible Topology and Media With PROFINET, you can implement various topology options such as line, star,…

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Sep 13

PROFINET Development FAQ

This month, we hosted a webinar on PROFINET Development: 7 Steps to Develop a PROFINET Device. There are many choices of ways to add PROFINET to an automation device. This webinar gave developers an overview of the seven steps to embed PROFINET in a product. In this article, I will expand on some questions we…

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Aug 26

PROFINET Cables: Requirements, Specifications, and Types

In this article, you can learn all about a crucial piece of infrastructure in PROFINET networks: the Cabling. A PROFINET network is based on standard IEEE 802.3 Ethernet. Therefore, you can utilize standard Ethernet cables to build your PROFINET network. You might have heard the term: PROFINET cable before. We will reference this term through…

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Aug 16

How does PROFIBUS DP work?

The communication basis for PROFIBUS lies in the cyclic data exchange between PLCs (masters) and devices (slaves). PROFIBUS components communicate using the PROFIBUS DP (Decentralized Periphery) communication protocol, which is the same for all applications and which allows cyclical and acyclical communication. The core of the communication process of PROFIBUS DP is the master-slave method….

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Jul 29

PROFIenergy: Energy Management for Industrial Networks

The motivation for PROFIenergy, the energy management Application Profile… Energy is one of the most significant cost burdens in many manufacturing facilities. Automation components consume a large amount of energy during production. Additionally, energy consumption can also be significant during production-free periods, as shown in orange in the diagram below. PROFIenergy offers energy-saving capabilities in…

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Jul 26

PROFINET vs Ethernet: Definitions and a Comparison

What is the difference between PROFINET and Ethernet? Can you give us a PROFINET vs Ethernet comparison? We get these questions quite often. And they are kind of difficult to answer because PROFINET and Ethernet are complementing technologies, not competing technologies. This short post will illustrate the comparison between PROFINET and Ethernet. Let’s start by…

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Jul 25

PROFINET Switch Options and Features

PROFINET offers a variety of possible topologies: tree, line, ring, star, etc. Nearly all PROFINET devices have at least two ports on them, and behind these two ports, there is an integrated switch that allows the creation of line topologies. Star topologies are efficient solutions in some applications, and for that, you have dedicated Ethernet…

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