Lydon, Bill. "Multivendor Ethernet Safety Protocol - Noble Goal."Automation website. April 2011. The article discusses major features of the technology. Lydon finds that the "concept could be simply an interesting idea but the openSAFETY group has published a number of testimonials from users," and goes on to cite appraisals from senior management officials at a number of different companies including Alstom Power Automation & Controls and Nestlé Corporate Engineering.
Verhappen, Ian. "The Hidden Network."Archived 2011-10-05 at the Wayback MachineControlGlobal.com website. 2 April 2011. Verhappen discusses the widespread use of the term in this field as well as the lack of a precise definition for it, and follows up with an actual examination of "black channel" safety data transfer.
"First Korea Industrial Ethernet Conference." In its news section, the Industrial Ethernet Book website reports that about 140 participants attended presentations on "various aspects of the implementation of Powerlink and openSAFETY," delivered by speakers who "presented reference projects as well as hardware components."
See Chapter 3. Media Access Control (MAC) frame and packet specifications in the IEEE 802.3-2008 standard, Section One for details on standard Ethernet frame formats and the principle of data encapsulation.
Verhappen, Ian. "The Hidden Network."Archived 2011-10-05 at the Wayback MachineControlGlobal.com website. 2 April 2011. Verhappen discusses the widespread use of the term in this field as well as the lack of a precise definition for it, and follows up with an actual examination of "black channel" safety data transfer.
