The Ethernet Powerlink Standardization Group (EPSG) is an independent organization founded in 2003 by leading companies of the automation industry. Its aims are the standardization and further development of POWERLINK, which was first introduced by B&R in 2001. The high-performance real-time communication system is a protocol extension of the IEEE 802.3 Ethernet standard, designed to ensure real-time data transfer on the microsecond level. With openSAFETY, the EPSG has introduced in2010 the worlds first 100% open safety protocol. In fact, openSAFETY is open not only in terms of its legal basis, but also literally open in technical respects: given the protocols busindependence, openSAFETY can be used with all fieldbuses, Industrial Ethernet solutions, or industry-specific communication solutions.