Basically the title,it seems like every I/O pack that is connected to the MarkVies Control System is the same as the one connected to the MarkVIe Control System except the reliability of the I/O pack.So what is unclear to me is there any difference on what they do?of course if I have connected different signals to them they are going to measure different values but lets say I have connected the same ones,is there going to be any difference,or is there any difference except the reliability between YPRO and PPRO?