Thanks Bernie, I learned something new today.
One more thing, when I checked the database of RSLogix, I saw: I:0.6 , I:0.7 and I:0/6 , I:0/7 ; what the different between them ?
(I'm trying to learn PLC and C-more by opening and read through the existing code for Micrologix 1400, C-more and electrical scheme. I also have some basic knowledge of PLC programming ! Do you have any suggestions to self-educate to be a control engineer who can do wire and do program for a control pannel ?)
Thanks a lot !