Profiblog

Jul 25

PROFINET Controller vs Device

PROFINET is a communication protocol to exchange data between controllers and devices. PROFINET components employ the consumer provider model for data exchange. With this model, controllers and IO devices can both assume consumer and provider roles, leveraging the full-duplex nature of Ethernet. Now, let’s explore three component roles you can observe in a PROFINET installation:…

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Jul 10

Is PROFINET deterministic?

PROFINET network installations typically operate in demanding industrial environments. PROFINET exchanges IO data with the appropriate speed and determinism required by manufacturing plants. To ensure suitable performance, PROFINET delivers data through the following communication channels: TCP/IP or UDP/IP for non-time-critical tasks, PROFINET Real-Time (RT) for time-critical cyclic data exchange PROFINET Isochronous Real-Time (IRT) for time-critical…

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Jun 25

Helpful Troubleshooting Tips for PROFIBUS Projects (plus common mistakes)

This article lists the top five mistakes made in PROFIBUS networks and gives you troubleshooting information and tips on how to prevent them. Wrong cable Do not utilize telephone or other consumer-market off-the-shelf cables in a PROFIBUS network. Such cables are not built to survive in industrial facilities where PROFIBUS is used. PROFIBUS installations should…

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Jun 7

PROFIBUS PA: Overview and Description

There are two flavors of PROFIBUS: PROFIBUS Decentralized Peripherals (DP) and Process Automation (PA) 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, PROFIBUS PA is the same…

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May 30

Can PROFINET Use Ethernet Cables? – Cabling Consideration

When designing a PROFINET network, you should employ the appropriate network components. For example, many people are uncertain about installing standard Ethernet cables in PROFINET networks. Can PROFINET networks use standard Ethernet cables? You can employ standard Ethernet cables to build a PROFINET network. There is no need for specialized hardware or vendor-specific products. You…

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May 7

Is PROFINET Proprietary? (a clear answer for engineers)

The statement that PROFINET is proprietary is a myth that we will debunk. A proprietary standard is owned by a company or organization. Such an entity exercises sole discretion as to who may use their technology and under what terms. An open standard is publicly available and has various rights to use associated with it….

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Apr 28

PROFIBUS Device Types Explained: Master vs Devices

PROFIBUS devices are divided into three classes based on their functions: PROFIBUS DP master (class 1) PROFIBUS DP master (class 2) PROFIBUS device PROFIBUS DP master (class 1): A PROFIBUS DP master of class 1 (DPM1) is a master who uses cyclical communication to exchange process data with its associated devices. Devices of this type…

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Apr 7

A Complete Comparison: PROFINET RT vs IRT

In the PROFINET world, PROFINET Real Time (RT) and PROFINET Isochronous Real Time (IRT) are common terms. PROFINET RT and IRT can be employed to deliver data within a PROFINET network. PROFINET RT is equipped in all PROFINET components and fulfills the majority of industrial automation timing requirements. PROFINET IRT is optional as it is…

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Mar 20

Can PROFINET and Ethernet Employ the Same Switch?

Switches are crucial components in industrial networks. They are commonly implemented in PROFINET configurations to deploy various topology options (i.e., tree, star, line, ring). But are those switches able to handle PROFINET telegrams and other Ethernet traffic? PROFINET can coexist with other Ethernet-based protocols in the same network and share network infrastructure, such as switches…

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Mar 12

The Difference Between Ethernet and Industrial Ethernet

The terms Ethernet and Industrial Ethernet often create confusion as they are often used interchangeably. This post makes a comparison between Ethernet and Industrial Ethernet. Ethernet and Industrial Ethernet are the same thing. The only difference is that Industrial Ethernet includes running Ethernet traffic over more ruggedized hardware. For example, the cabling employed for Ethernet-based…

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