Experimental Physics and
Industrial Control System

"Garrett D. Rinehart" <[email protected]> · Wed, 16 Feb 2000 14:30:33 -0600 (CST)

I've got a kind of a peculiar Camac here. I'm wondering if any of you 
can help me out. 

The Camac is driven by the Hytec 2992 (driver from CEBAF/TJNAF). I'm 
using EPICS_3.13.0b11 on an MV172.

The crate sits in a very nasty (electrically) environment and goes 
"brain-dead" every once in a while. To get around this, I just execute 
the "camacCrateInit" routine from a subroutine record every ten 
seconds. This works very well, generally. Unfortunately, the crate is 
run off a generator ('cus it's in a room that floats at 750keV) and 
it's shut down when the machine is not running. The only problem there 
is that it brings the VME crate to its knees waiting to hear from the 
Camac and, as a result of repeated failed attempts to init the crate, 
eventually crashes. (Note that the mv167 was much more rhobust about 
this than the mv172, but both crash from it.)

My questions to all of you are: 
1) Is there a better way to do this? 
2) What is that better way?

Thanks very much in advance.

Garrett Rinehart
Intense Pulsed Neutron Source
Argonne National Laboratory
9700 S. Cass Ave
Argonne, IL  60439
(630)252-6561

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System