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PROFINET — The Ethernet Automation Standard

The most used Industrial Ethernet standard for automation is PROFINET, which has more than 40 million nodes installed worldwide. Businesses benefit from PROFINET's capacity to expedite procedures, increase output, and increase plant availability.

Performance

The productivity and quality of a company's products determine its level of market success. Deterministic device synchronisation, dynamic drives, high-speed controllers and accurate motion control are necessary to achieve increased productivity — allowing both high production rates and optimal product quality at the same time.

Speed & Precision

Fast motion control applications need precise and deterministic data transfer, accomplished by means of isochronous real-time (IRT) drive controllers. Isochronous mode and IRT provide reliable, quick connection via PROFINET — maintaining synchronisation between a system's input, network, CPU processing and output cycles even with concurrent TCP/IP traffic. Fast cycle times ensure excellent precision and product quality while increasing machine and plant efficiency. The common PROFIdrive profile enables communication between CPUs and drives, irrespective of vendor.

Large Quantity Structures & High Data Rate

By using PROFINET, the range of equipment and systems that can be implemented is no longer limited. Within a single network, many controllers can communicate with their assigned field devices, and since all IP addresses are usable, practically any number of field devices can be added to a PROFINET network.

By employing 100 Mbit/s in full duplex mode, PROFINET surpasses previous fieldbuses in data rate by a significant margin — allowing additional plant data to be sent over TCP/IP alongside process data. Even large-scale data transfers, such as those from cameras, have no detrimental effects on the precision and speed of IO data transmission thanks to PROFINET techniques.

Media Redundancy

Installing ring topology redundancy helps increase plant availability. In addition to external switches, integrated PROFINET connections can also be used to create media redundancy. The Media Redundancy Protocol (MRP) can achieve 200 ms reconfiguration times, keeping the plant from stopping if contact is lost in a single ring system area.

In motion control applications, PROFINET with IRT in ring topologies offers improved media redundancy for planned duplication (MRPD), operating without reconfiguration time in a bumpless mode. Even in the case of a communication failure (such as a cable break), the process can continue unhindered.

PROFINET — SINAMICS S120 Functions

PROFINET's "system redundancy" function, supported by SINAMICS S120, enables it to be connected to high-availability systems like the SIMATIC S7-400H with two controllers, requiring no additional hardware. There is always access to the SINAMICS S120 for both high-availability system controllers — the other controller assumes control in the event of a cable break or CPU malfunction, guaranteeing uninterrupted communication.

PROFINET — SINAMICS S110 Functions

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