Experimental Physics and Industrial Control System
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There was a short discussion of the mbboDirect record in march 2007 but
I have found another thing about it that is annoying. It is that
monitors are not posted on the bits, making the bits of the record
behave differently from a collection of bo records from the point of
view of edm. If you set a bo record the change will be reflected on any
screen displaying controls for it but if you set one of the bits of an
mbbo record that will not be the case.
The previous discussion mentioned the role of the bits in the possible
closed loop operation of the mbboDirect record. I would propose that in
closed loop operation the bit monitors not be posted since they would be
inconsistent and not meaningful. However, in supervisory mode, for
which I would argue the record must have been designed, it would be
useful to have the bits post monitors. This would enable single
mbboDirect records to be used rather than groups of bo records in many
cases.
Carl
--
Carl Lionberger
510 486 7503
Software Developer, Engineering Division
Lawrence Berkeley National Laboratory
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ANJ, 02 Sep 2010 |
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