Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Wed, 19 Sep 2001 07:39:28 -0500

Jim Thomas wrote:

> It appears to me that I would want one IOSCANPVT for each input bit.  That
> way only the records referencing that bit would get processed when that bit
> changes.  If I have a hundred records looking at one bit on the card and
> one record looking at another bit that changes much more often, aren't
> those hundred records processed needlessly?
> 
> Or does mbbi handling require a common IOSCANPVT ?
> 
> Mahalo,
> Jim

If you provide mbbi device support then you almost have to provide one IOSCANPVT
for each digital I/O word rather than each bit. Only the mask fields in each
record instance determines which bits are used by that record.

Marty Kraimer

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System