PROFINET enables data exchange with minimal response times between controllers and field devices. The industrial communication standard specially developed for automation and control processes is characterized by high speed and reliability and is suitable for a wide range of applications. Whether process automation, building automation or logistics: PROFINET is a key technology for a wide range of industrial and commercial applications.
PROFINET simply explained
PROFINET stands for Process Field Network, an open industrial Ethernet standard developed by the PROFIBUS User Organization e. V. (PNO) specifically for automation. PROFINET supports numerous network architectures and topologies, including line, ring and star networks.
Thanks to its modular design, the industrial communication standard is suitable for both small, simple automation tasks and large, complex production systems. The main advantages of the Ethernet solution include the ability to communicate in real time and the seamless integration of other fieldbus systems. The latter simplifies the modernization of existing systems and ensures their longevity in a rapidly evolving technology landscape.
What is the difference between PROFINET and Ethernet?
It is difficult to compare PROFINET and Ethernet, as they are related but divergent technologies.
Ethernet is a general communication standard that is primarily used in IT networks. It represents the first two layers of the ISO/OSI model and defines electrical signals within the cable, access to the bus in the Local Area Network (LAN) and the sending and receiving of messages.
PROFINET is at home in industry. The standard works on the seventh layer of the ISO/OSI model, which is ultimately based on the Ethernet layers. Among other things, it specifies the following functionalities:
- Cyclical data exchange
- Acyclic parameter data
- Device identification
- Device diagnostics
- Alarms
- Topology information
PROFINET offers real-time capability, high data bandwidths and extensive diagnostic and maintenance functions that contribute to early error detection and help to minimize downtimes. It is optimized for use in industrial environments and impresses with its high reliability and fault tolerance.
These are the most important differences between Ethernet and PROFINET at a glance:
| Ethernet | PROFINET | |
| Latency | may vary | typically less than 10 ms, up to less than 1 ms possible |
| Real-time behavior | Not designed for real-time communication | Various real-time communication profiles |
| Redundancy | No standard mechanisms for media and system redundancy | Several standard redundancy mechanisms |
| Industrial suitability | Not designed for harsh industrial environments | Components certified for industrial use |
PROFINET in the IIoT environment: the future of communication
The Industrial Internet of Things (IIoT) and Industry 4.0 aim to increase efficiency and productivity by networking machines, plants and systems. With its fast and reliable real-time communication and high data bandwidths, the PROFINET standard creates the conditions for precise monitoring and control of networked components. It is thus establishing itself as a key technology for the automation of production processes.
As PROFINET supports the simple integration of sensors, machines and controllers into digital manufacturing processes, the communication standard promotes the creation of networked, flexible production environments and contributes to the optimization of industrial processes. By implementing advanced security mechanisms, PROFINET for IIoT also increases network security and protection against cyber threats.
PROFINET in practice with Delphin Technology
With our Expert and ProfiMessage D devices you benefit from the many advantages of PROFINET. These include
- Fast data exchange: Communication with PROFINET enables fast response times and precise coordination of machines and systems.
- Reliability and flexibility: High-quality hardware minimizes downtimes and ensures stable and efficient processes.
- Easy integration and scalability: Existing systems can be easily expanded and new components integrated. This reduces the costs of switching to Industry 4.0.
- Optimized data collection and analysis: Our devices enable you to monitor and control machines and systems with the shortest response times. This results in greater efficiency and faster fault detection.
- Cost efficiency through predictive maintenance: Analyzing the operating data makes it possible to identify and rectify problems at an early stage. This reduces maintenance costs, helps to prevent unplanned downtime and extends the service life of your production systems.
Do you have any questions about the Delphin Technology PROFINET solutions or are you looking for support with a specific application? Then please contact us and let our experts advise you.