- for devices in DAQ data stream:
- config readable via pvAccess (could be an IOC making cfg "visible")
- subset of config writeable by DAQ/controls
- trigger controlled by DAQ (unless device is "transferred" to controls)
- timing must be done with XPM, not fanout so dead time will work
- if controls/DAQ both want high-rate data: duplicate PGP fiber
- with duplicate fiber, config virtual channel is accessible on both (decide administratively who gets to access)
- duplicate fiber could potentially get bad effect from dead time
- low rate DAQ data sent via pvAccess to controls (e.g. via AMI)
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