1. A method for validating a control output from a field device in a process, the method comprising: learning a cycle of the process to provide a learned process information, the learned process information comprising stored process variables and stored control outputs over a specified time period; measuring a current process variable in the process and calculating the current control output for the process as a function of the current process variable to provide current process information; and comparing the current process information to the learned process information in a validation circuit and providing a validity signal, the validity signal indicating that the current control output has exceeded a predetermined boundary derived from the learned process information.