Thanks for this. hard to find logixpro tutorials in english, with sound or that don't want to put me to sleep.. btw the little arrow button quickly swaps between offline and online modes.. you can't add I/Os when you are online! that's why that happened.. i literally just figured that out myself.. used this software in college like 12 years ago and haven't really done any ladder logic since then but now i took a job and told them i know how to do this stuff so i am refreshing and this is really helpful. thanks again!