3.The third problem is so important for me , i want to monitor and archive the status of digital & analog I\Os of LOGO in MS-excel. i have checked LOGO data logger threads but just find some xlm files witch i downloaded, i want to know that how can i establish a connection bitween LOGO data and excel file i downloaded? do i need an interface? is'nt it opc server?

Other two questions are splitted into the following threads
Cycle time delay.
need to see and register the start time .