Footnotes from Chapter 5     Footnote 2, pg. 99 An interesting review of further efforts at standardizing CNC data transfer schemes is given by Golden E. Herrin, CIM Perspectives "Progress of SERCOS," Modern Machine Shop, May 1996, 146-148.       Find Modern Machine Shop Magazine (MMS) articles:     1.) "CIM Perspectives - Profibus" by Golden E. Herrin     2.) "CIM Perspectives - DeviceNet" by Golden E. Herrin             Please visit often, more content coming for the CNC links and exercises.