Re: CAMAC IO

[Luedeke Andreas <andreas.luedeke@psi.ch>]

Tim Mooney wrote:
> > Unrelated question is, Is it possible to modify a field value in a 
> > record
> > from within a subroutine?  To be more specific, I have a sub record 
> > and from
> > its process subroutine I want to modify a field in another record.  
> > Can that
> > be done?
> Yes, but it's not a good idea to do it.  Better to use the genSub 
> record, because it has output links.
Instead of using a 'sub' / 'gensub' record at all I prefer to write 
device supports for calculations.
It is easier to extend and each record type is native, e.g. it has alarm 
limits, units, dead bands, etc.
You can connect an arbitrary number of records to one device support.
E.g. use 'ao' records to input to the device support and 'ai' records as 
containers for the calculation results.
The DTYP specifies the device support and INP/OUT links specify the 
input/output variable in my device support.

An additional 'ao' record can copy the result to your field of another 
record.

- - Andreas