Re: Trigger aSub record from bi record reflecting status

[Luca Cavalli <LCavalli@cgspace.it>]

Hi Tim,

brilliant idea using SDIS field :)

Thanks. It works as expected now.

Cheers,

Luca

On mer, 2016-07-13 at 15:27 +0000, Mooney, Tim M. wrote:

> Hi Luca,
>
> What you're doing is fine.  I'd use a bo record, but I don't think the choice really matters.
>
> To reset the bi record, I'd use an output link from the aSub record, and I'd have that output link process the bi record, so that its VAL field gets posted, so clients can see it.  Yes, this will get the aSub record processed again.  There is an EPICS idiom for processing a record only on a rising or falling transition:
>
> record(aSub, "$(SYS):$(MOD):COORD_CONVERTER") {
>     field(SDIS, "$(SYS):$(MOD):CONVERT_CMD")
>     field(DISV, "0")
>     ...
> }
>
> Tim Mooney (mooney@aps.anl.gov) (630)252-5417
> Beamline Controls Group (www.aps.anl.gov)
> Advanced Photon Source, Argonne National Lab
>
>
> ________________________________________
> From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of Luca Cavalli [LCavalli@cgspace.it]
> Sent: Wednesday, July 13, 2016 7:18 AM
> To: tech-talk@aps.anl.gov
> Subject: Trigger aSub record from bi record reflecting status
>
> Dear all,
>
> I have to perform a conversion of a set of coordinates using an aSub record.
> I have set the SCAN field of the record to passive and any change in a bi record
> ($(SYS):$(MOD):CONVERT_CMD) triggers the processing.
>
> This is an extract of the database:
>
> record(bi, "$(SYS):$(MOD):CONVERT_CMD") {
>   field(DESC, "Convert command.")
>   field(PINI, "NO")
>   field(UDF, "0")
>   field(FLNK, "$(SYS):$(MOD):COORD_CONVERTER")
>   field(VAL, "0")
>   field(ZNAM, "DONE")
>   field(ONAM, "CONVERT")
> }
>
> record(aSub, "$(SYS):$(MOD):COORD_CONVERTER") {
>   field(INAM, "convAsubInit")
>   field(SNAM, "convAsubProcess")
>   field(FTA, "DOUBLE")
>   field(INPA, "$(SYS):$(MOD):SRVY:RA_SET_POS PP")
>   field(DESC, "Coordinate converter.")
>   field(SCAN, "Passive")
>   field(INPB, "$(SYS):$(MOD):SRVY:DEC_SET_POS PP")
>   field(INPC, "$(SYS):$(MOD):SRVY:X_SET_POS PP")
>   field(INPD, "$(SYS):$(MOD):SRVY:Y_SET_POS PP")
>   field(INPE, "$(SYS):$(MOD):SRVY:Z_SET_POS PP")
>   field(INPF, "$(SYS):$(MOD):SRVY:START_TIME PP")
>   field(INPM, "$(SYS):$(MOD):CONVERT_CMD")
>   field(FTB, "DOUBLE")
>   field(FTC, "DOUBLE")
>   field(FTD, "DOUBLE")
>   field(FTE, "DOUBLE")
>   field(FTF, "DOUBLE")
>   field(FTM, "ENUM")
> }
>
> Is this the proper way to achieve this task?
>
> How to reset the $(SYS):$(MOD):CONVERT_CMD value to 0 from the C code of the convAsubProcess function?
>
> Does this change from 1 (CONVERT) to 0 (DONE) will trigger an additional call to convAsubProcess?
>
>
> Thanks for your help.
>
>
> Luca
>
>
> ________________________________
>
> << Le informazioni contenute in questo messaggio di posta elettronica e relativi allegati sono riservate e confidenziali e ne è vietata la diffusione in qualunque modo eseguita. Qualora Lei non fosse la persona a cui il presente messaggio è destinato, La invitiamo ad eliminarlo e a darcene gentile comunicazione. Quanto precede ai fini del rispetto delle Legge 675/96 e del Decreto Legislativo 30/06/2003 n.196, sulla tutela dei dati personali >>
>
> << This e-mail is confidential and may well also be legally privileged. If you have received it in error, you are on notice of its status. Please notify us immediately by reply e-mail and then delete this message from your system. Please do not copy it or use it for any purposes, or disclose its contents to any other person: to do so could be a breach of confidence. Thank you for your co-operation. Please contact our IT Helpdesk on +3902380481 or email it@cgspace.it if you need assistance >>

 

---

<< Le informazioni contenute in questo messaggio di posta elettronica e relativi allegati sono riservate e confidenziali e ne è vietata la diffusione in qualunque modo eseguita. Qualora Lei non fosse la persona a cui il presente messaggio è destinato, La invitiamo ad eliminarlo e a darcene gentile comunicazione. Quanto precede ai fini del rispetto delle Legge 675/96 e del Decreto Legislativo 30/06/2003 n.196, sulla tutela dei dati personali >>

<< This e-mail is confidential and may well also be legally privileged. If you have received it in error, you are on notice of its status. Please notify us immediately by reply e-mail and then delete this message from your system. Please do not copy it or use it for any purposes, or disclose its contents to any other person: to do so could be a breach of confidence. Thank you for your co-operation. Please contact our IT Helpdesk on +3902380481 or email it@cgspace.it if you need assistance >>