On 5/8/08, Xiaofan Chen wrote: > You can have the same manufacturing lines, same PLC, > same motor drive, etc, but you write different PLC programs > to have different manufacturing process. Yes, but what if the manufacturing line is reconfigurable to some extent? Suppose, for example, that we give wheels and components to the tools, or that two users (Bryan and Xiaofan) opt to make installations, and Xiaofan opts to implement his own makeshift arm that, more or less, follows most of the standards and specifications? How can this be accounted for? Would a total refactoring of all of the PLC-programs have to be rewritten? Or could something dynamic be done? - Bryan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist