Scan Library

Three Libraries Part of 3 Independent Libraries Qt Widget Bindings (EPICS aware) Scan Library Data Output Library These are dynamically linked into various applications

Scan options Trigger select: Start is executed once after the initialization is complete, before any other action processing or positioner movement. Begin Pass runs at the beginning of every repeat, before the positioner is returned to the first requested position. Move runs immediately after each value is written to the positioner. Dwell runs immediately after the Move action list completes. End Pass is executed at the end of every repeat Finish is executed when the scan has completed ■ all the repeats. Start Pause is only executed if a scan pause is requested, and occurs at the beginning of the pause. End Pause is executed at the end of a scan pause.

continued.... Actions: Call Event notify an event to record a data line (no-op if the event is currently recording another line) Wait Event checks that a named event is not processing Wait Motor (avoid using) for motors without synchronized :status PV, check that no movement is occuring (requires setup on the Motor Groups page) Call Scan request that a scan be executed Wait Scan check to ensure that a named scan is not executing Delay Time stop processing for the specified time Set PV write a value out to a PV. Wait PV wait until the value of a PV is equal to the entered value

Example.... Trigger Move: Wait Event 'outputData' Wait PV 'step:status' 'DONE MOVE' Wait PV 'dataAcq:control' 'STOP' Trigger Dwell: Set PV 'dataAcq:control' 'START' Call Event 'ouputData' noWait Wait PV

Events Arbitrary number of events can defined Referenced in the scan Again data driver

Embedded