is there a way to use the clock status bits to time functions to happen at a certain time of day or use it with TON or TOF instructions, we are trying to put things such as exhaust fans, water heaters,air compressors, and things of that nature on an slc 501 up to a 504 and use a panelview to manipulate the programming of times to shut off or start up with out maintenance having to come in early to get these things started up and stay late to shut down. this may be impossible i dont know. thanks, david