1) PROFIBUS International (PI) is the largest automation community worldwide with over 1400 member companies. It supports PROFIBUS and PROFINET through various regional associations, test labs, competence centers and training centers.
2) PROFIBUS and PROFINET are industrial communication standards developed by PI to connect controllers with field devices. PROFIBUS is a fieldbus standard for connecting devices via a single cable, while PROFINET uses Ethernet networking.
3) PI membership provides benefits like marketing support, guidelines, trainings and certifications to help companies develop, market and sell interoperable products based on PROFIBUS and PROFINET standards.