PROFINET

Profinet (usually styled as PROFINET, as a portmanteau for Process Field Net) is an industry technical standard for data communication over Industrial Ethernet, designed for collecting data from, and controlling equipment in industrial systems, with a particular strength in delivering data under tight time constraints (on the order of 1ms or less). The standard is maintained and supported by PROFIBUS & PROFINET International (PI) , an umbrella organization headquartered in Karlsruhe, Germany. Profinet (usually styled as PROFINET, as a portmanteau for Process Field Net) is an industry technical standard for data communication over Industrial Ethernet, designed for collecting data from, and controlling equipment in industrial systems, with a particular strength in delivering data under tight time constraints (on the order of 1ms or less). The standard is maintained and supported by PROFIBUS & PROFINET International (PI) , an umbrella organization headquartered in Karlsruhe, Germany. Interfacing to peripherals is implemented by PROFINET IO. It defines the communication with field connected peripheral devices. Its basis is a cascading real-time concept. PROFINET IO defines the entire data exchange between controllers (called 'IO-Controllers') and the devices (called 'IO-Devices'), as well as parameter setting and diagnosis. IO-Controllers are typically a PLC, DCS, or IPC; whereas IO-Devices can be varied: I/O blocks, drives, sensors, or actuators. PROFINET is designed for the fast data exchange between Ethernet-based field devices and follows the provider-consumer model. Field devices in a subordinate PROFIBUS line can be integrated in the PROFINET system seamlessly via an IO-Proxy (representative of a subordinate bus system). A device developer can implement PROFINET with any commercially available Ethernet controller. It is well-suited for the data exchange with bus cycle times of a few ms. The configuration of an IO-System is similar to PROFIBUS.