To be very conservative, you must force an update of a channel prior to extracting data from the database. Updating is required if you want to step a magnet through many values and read the results without introducing a several second pause at each stem. The database names all end with the extension .VDB . Most of our routines will call this routine for you. The use is dependent on the context.
Channels also have a group of additional attributes, such as labels, params, hparams, etc.
Specialized access routines must be used to get these. The following routines allow database access without specifying the database names. Allows the use of conditional arguments. Returns string length. Returns the list of specified device names for the region and optionally their S positions.