Oct 18 2019

PROFINET & Advanced Physical Layer [APL]

“What is the Advanced Physical Layer / APL?” … is a question getting a lot of attention. As of today you cannot land a standard PROFINET cable directly on an instrument that is located in a hazardous environment, where a spark might cause an explosion. (Well, technically, you can do it once. Just once… Kaboom!)…

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Oct 5 2019

Industrial Wireless Access Points

PROFINET supports WLAN and Bluetooth as part of its specification. PROFINET enables wireless connections without limitations*, even with safety messages (PROFIsafe). Since PROFINET is based on standard Ethernet, it does not require specialized networking hardware. Commercial off-the-shelf Wireless Access Points (WAPs) can be part of a PROFINET network. Even though specialized industrial WAPs are not…

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Sep 20 2019

Make the Connection: PROFINET over Wireless

Wireless connections open up a wide variety of applications which are very difficult or impossible with regular cabling, such as automated guided vehicles (AGVs), autonomous mobile robots (AMRs), and portable control panels. PROFINET is based on standard unmodified Ethernet and can connect seamlessly with any wireless standard from IEEE 802.11 (WLAN) or IEEE 802.15 (Bluetooth)….

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Sep 4 2019

More on Network Topology

Since PROFINET is based on standard unmodified Ethernet, it gives users all topology options: cabled topologies and wireless connections(via Bluetooth or Wi-Fi). The table below summarizes the benefits and challenges of different PROFINET topology configurations. Topology Description Benefits Challenges Line Most PROFINET devices have at least two ports, with such ports being part of a…

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Aug 23 2019

Topology Options: Fieldbuses and Industrial Ethernets

Topology is a generic term to describe device connections in a network. The term is not exclusive to industrial networking. Social networks, for example, have their own topologies between people. Network topology, specifically, is the network layout. In Industrial networking, wired topology options include line, tree, star, and ring. Topology Options Fieldbus Networks Line topologies…

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Aug 8 2019

PROFINET and TSN – Q&A Block

Last week we hosted a highly anticipated webinar on PROFINET and TSN. Due to time limitations, we were not able to answer all the questions that came in, but we would like to answer them in this blog post. If you are not familiar with the new terms mentioned below (TSN domains, NME, etc.), please…

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Jul 23 2019


It’s worth spending a minute looking again at the relationship between OPC and PROFINET. Both technologies have been around for a long time, so it’s interesting that only now are we really starting to see their complementary nature get enhanced. Boy, things do move slowly in this industry. Here’s an update on where we stand….

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Jul 10 2019

PROFINET Shared Device

PROFINET offers many features for custom-tailored architectures and automation applications. One of these features is PROFINET Shared Device, it gives multiple PROFINET IO controllers access to the same IO device. How Does It Work? PROFINET Shared Device offers a device the ability to support connections to more than one controller at the same time. When…

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Jun 30 2019

PROFINET Security for Industry 4.0

Security at the Protocol Level In this world of Industry 4.0 and the Industrial Internet of Things, digitalization of production processes is mandatory. As digitalization spreads to all levels and applications in manufacturing, IT security gains more importance. Previous security concepts relied primarily on isolating production plants from external users and networks. But in the…

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Jun 10 2019

Choosing a Network Topology

Network Topology Options PROFINET gives you flexibility for network design. PROFINET supports line, tree, ring, and star cabled topologies. In addition, it supports wireless connections via Bluetooth or WiFi(we won’t get into the subject of wireless, but you can get an overview by watching this webinar: Wireless Webinar). The section below covers the pros and…

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