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CAEN
Wiki > The Backend System > Specific Device IOC > Power Supplies > CAEN
A high voltage power supply normally used for detector electronics.
They are communicated with using Ethernet using an IOC originally developed at the Canadian Lightsource.
The IOC has a read-only mode which can be set via macros.
A single IOC can communicate with up to 8 CAEN crates, this appears to be a limit in the CAEN library as it defines MAX_CRATES as 8 in the library header and has a "too many connections" error code listed in its potential error codes.
To do this the crates must be added into the st.cmd as so:
CAENx527ConfigureCreate "hv0", "_IP_ADDR1_"
CAENx527ConfigureCreate "hv1", "_IP_ADDR2_"
When CAENx527DbLoadRecords is called it will then create PVs of the form hv0:_SLOT_:_CHANNEL_
If you run dbl and get mainly standard support IOC PVs check that comms have been established to the given IP address
If you log in to the console and cannot get an EPICS prompt, the whole console/procserv must be restarted, as typically the Ctrl-X option does not work in this situation either