The paper describes the evolution of the control and dataacquisition system from its initial implementation on the FrascatiTokamak (FT) to the modifications for the Frascati Tokamak Upgrade(FTU), and then the present upgrading necessitated by machineenhancement and technological improvements. The latest developments havebeen made placing emphasis on the typical requirements of anexperimental fusion machine control system, such as modular structure,advanced man-machine interface, automation of all or part of themanagement procedures of the experiment, easy servicing and updating ofthe software system, possibility to include important commercialsoftware applications, such as data base, and historical registration ofplant measurements. Our experience has also shown that the followinggoals should also be achieved: easiness of use by operators who do nothave a thorough knowledge of the layout of all the plants, possibilityto keep and integrate the existing applications used by FTU physicists.The new control and data acquisition system integrates old and newrequirements with currently available commercial software applicationsin order to match optimization, throughput, and the experimentalrequirements
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