It is important that application developers conform to standards in the use of these terms. A set of programmer guidelines is included at the end of the document. Live Data Live data is data that represents the current state of the accelerator. This does not only mean setpoints or functions that exist in hardware. It also may include high level physics functions or physics parameters.
Applications store Live data sets when they send new functions to hardware.
In all applications, the option that sends to hardware and stores live data will include the words 'Make Live'. The date on a Live file indicates when the data was 'made live'. Discrepancies can arise between the application's idea of what is live and the true state of the hardware. Under normal conditions, this should occur infrequently. When the hardware settings differ from the Live file, the Live file is extremely useful as a record of the last operational settings sent to the hardware.