ABSTRACT

PROFINET is the real-time (RT) Ethernet solution developed by PROFIBUS International (PI), the world association of PROFIBUS and PROFINET manufacturers and users. ¥e PROFINET protocol is an international standard since it has been incorporated in the current edition of the IEC 61158 and IEC 61784 standards. In details, the IEC61784 de¦nes the subsets of the services speci¦ed in IEC 61158 that are to be applied for PROFINET under the designation “Family 3” with subdivisions 3/3, 3/4, 3/5, and 3/6.