Experimental Physics and
Industrial Control System

RE: query about CAMAC vs AB

Ric,

CEBAF uses CAMAC extensively via a serial highway and a VME card to
drive it.  A VME branch driver would also work with the existing software,
and could be plugged into a VXI crate with an adapter.  So if you want
to preserve existing hardware, it is possible and supported by a major
EPICS site.

For new installations, AB is probably a better bet, but I have no first
hand experience.  The AB stuff can probably stand a more hostile environment
and may have more robust interfaces to VME/VXI.  CAMAC would have a speed
advantage, since the branch highway can do an I/O operation in 3 usec.

Chip Watson
CEBAF

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