Experimental Physics and
Industrial Control System

Russell Page <[email protected]> · Fri, 21 Jan 2000 17:41:35 -0500

Mark:

Your suggestions were helpful. I made the link from FLNK to PROC, but that by
itself was not enough. I also tried adding a link from OUTx to the VAL of the
next Dfanout and that got me closer.

The final solution (for a total of 3 fanouts) was the FLNK to PROC link (1 -->
2, 2 --> 3) AND making the DOL field in all three Dfanouts the same. Note that
for all three Dfanouts, the OMSL field was set to closed loop. Also, since I
didn't need to waste an OUTx on data propagation, I now had eight OUTx on each
fan. For my purposes, this meant I only needed two fanouts.

Mark Rivers wrote:
> 
> > The Data Fanout record is "similar" to the Fanout. Where as the Fanout record
> > only supports control links (i.e. no data is passed), the Data Fanout propagates
> > control AND data. A Data Fanout record supports eight output links. Can the Data
> > Fanout record also be chained, like the Fanout? If so, could someone explain
> > how? I have tried every permutation I can thank of, linking various types of
> > records with the Data Fanout, to no avail.
> 
> I simply connect the forward link of the first Data Fanout to the .PROC field
> of the second Data Fanout:
> 
> grecord(ddfanout,"$(P)ReadAll") {
>         field(SCAN,"5 second")
>         field(DISV,"0")
>         field(SDIS,"$(P)Acquiring NPP NMS")
>         field(VAL, "1")
>         field(OUTA,"$(P)mca1.READ  PP MS")
>         field(OUTB,"$(P)mca2.READ  PP MS")
>         field(OUTC,"$(P)mca3.READ  PP MS")
>         field(OUTD,"$(P)mca4.READ  PP MS")
>         field(OUTE,"$(P)mca5.READ  PP MS")
>         field(OUTF,"$(P)mca6.READ  PP MS")
>         field(OUTG,"$(P)mca7.READ  PP MS")
>         field(OUTH,"$(P)mca8.READ  PP MS")
>         field(FLNK,"$(P)ReadAll1.PROC")
> }
> grecord(ddfanout,"$(P)ReadAll1") {
>         field(VAL, "1")
>         field(OUTA,"$(P)mca9.READ  PP MS")
>         field(OUTB,"$(P)mca10.READ  PP MS")
>         field(OUTC,"$(P)mca11.READ  PP MS")
>         field(OUTD,"$(P)mca12.READ  PP MS")
>         field(OUTE,"$(P)mca13.READ  PP MS")
> }
> 
> Note that I am using the "ddfanout" record rather than the "dfanout".  The
> "dfanout" documentation in the Record Reference Manual claims that its data
> output is a double.  However, this is not true, it is actually a long.  I
> needed to fan out a double, so I wrote a new record, ddfanout, which simply
> has a double datatype rather than a long.
> 
> Mark Rivers

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System