Hello,
I use a substitution file to create pvs representing the channels of high voltage boxes. The pattern is:
{box, level, channel}
{1, 0, 0}
{1, 0, 1}
{1, 0, 3}
{1, 1, 0}
...
As indicated not every channel of every box is in use. It would be nice to have some kind of info which channels are currently in use without simply trying every possible channel and checking whether it exists or not. It would be useful to have some kind of pv that contains this info, but currently I have no clou how I could do this. What could I do?