Thanks Steve for the info. I Have a GE Fanuc series 90-30 and LM90 Software. I am not familiar in using logicmaster for programming thats why im looking for a tutorial. My project is simple. I want to monitor all arriving components in a conveyor such that when an item enter the conveyor a timer for that item is activated and so for the other incoming items. If ever any item did not reach the end of the conveyor let say 500secs an alarm will be activated. Could anybody help me in accomplishing this using logicmaster 90-30? Pls. help!