Jan 1

PROFIsafe over Wireless

Nowadays, functional safety can be implemented over the bus shifting from safety in hard-wired relays to safety performed in logic. PROFIsafe is an additional software layer that provides functional safety over the bus in PROFINET networks. PROFIsafe ensures the integrity of failsafe signals transmitted between safety devices and a safety controller meeting the relevant safety…

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Dec 19


I-Device is an optional PROFINET feature, which operates on the controller level. This feature allows a controller to be both a device and controller simultaneously, allowing for controller to controller (some might say peer to peer) communications with PROFINET.  I-Device functionality brings many benefits. For example, it enables the setup of communications between IO controllers…

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Dec 1

PI Technologies Everywhere

2019 Application Stories This year, PROFINEWS featured several application stories that highlighted the role of PROFINET, PROFIBUS, or IO-Link in a current automation project. The list below includes all of those application stories. Click on any title below to read the full article. Also, don’t forget, PI North America is always looking for exciting new…

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Nov 16

PROFIsafe Key Frequently Asked Questions

Safety systems protect equipment, people, and the environment. Traditionally, safety systems rely on separately wired circuits that are expensive to build, commission, and maintain. Nowadays, functional safety can be done over the bus shifting from safety in hard relays to safety in logic. With over 11 million installed nodes worldwide, PROFIsafe is the industry-leading solution…

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Nov 3

Wi-Fi or Bluetooth? It is your Choice.

Do you need to establish a wireless connection? PROFINET offers you the option to connect wirelessly through two well-know IEEE standards: WLAN and Bluetooth. Which one should you choose? With PROFINET it is completely your choice! PROFINET supports WLAN and Bluetooth connections without restrictions. Real-time data can be transmitted wirelessly, as well as safety messages….

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Oct 18

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

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

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

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

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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