Posted 8 Feb 2008 Hello, Im pretty new to ladder logic, but think Ive got the basics. I need to modify an existing program.... Theres a timer (TMR) set for K100 (which I don't really understand either). As far as I can figure, when the time (10s) ends, the output should change state (contacts close) but they do not. What am I missing? I don't know how it could be more simple, but I can't get the thign to switch. It's pretty much shown like the example in the help file, but it's in parrallel with a coil output. nothing fancy......software is DIRECTSOFT 5, plc is direct logic DL105. Running Windows xp pro sp2.... Share this post Link to post Share on other sites