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The setpoint table (<corr>:CurrSetpt) can hold up to a maximum
of 2000 values [can be increased but you'll need EPICS-3.14 to write
large arrays]. It is possible to write less values than the maximum
- EPICS will automatically know the number of elements that have been
written to the setpoint table (this number is itself a read-only PV:
<corr>:CurrSetpt.NORD). In particular, it is possible to write a
single value to the table. The setpoint table supports Spear Timestamps
(<corr>:CurrSetpt.TSE==-2) which means that it is possible to
determine exactly when the first (and therefore all subsequent)
setpoint was written out.
Till Straumann
2019-12-03