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<== Date ==> <== Thread ==>

Subject: Re: areaDetector question
From: Hinko Kocevar <hinkocevar@gmail.com>
To: Jörn Dreyer <j.dreyer@hzdr.de>
Cc: EPICS Tech Talk <tech-talk@aps.anl.gov>
Date: Tue, 17 Apr 2018 15:56:04 +0200
OK, it seems it is not the maximum array bytes that are your problem, ATM.

Are you sure that the ArrayData record is actually updated? Can you
check UDF and TIME record fields?
Is the StdArrays plugin 'Enabled'; does it increment its unique ID
when new array is received from the driver? I would load up some OPI
and check the image plugin for these statuses.

Running caget against the 13SIM1:image1:ArrayData I happen to have
here results in all 0; this is seen if plugin is not enabled hence no
image data is written to the record.

/Hinko

On Tue, Apr 17, 2018 at 3:18 PM, Jörn Dreyer <j.dreyer@hzdr.de> wrote:
> Hi Hinko,
>
> I tried your suggestion, but still no success. That's what ca get delivers
> back.
>
> ~ $caget -d 2 HIBEF:XFEL:image1:ArrayData | more
> HIBEF:XFEL:image1:ArrayData
>     Native data type: DBF_FLOAT
>     Request type:     DBR_FLOAT
>     Element count:    1000
>     Value:            2.02038e-39 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0
>
> I looked at the array in the readout function of the driver,. There it is
> correctly filled with meaningfull values.
>
> Regards,
>
> Jörn
>
> Am Dienstag, 17. April 2018, 14:58:43 CEST schrieb Hinko Kocevar:
>> Hi Jörn,
>>
>> looking at your dbLoadRecords it seems you are about four times over
>> the default MAX ARRAY bytes (16 kB); 8000 x float64 (8 bytes) = 64kB.
>> Try lowering the count NELEMENTS=1000 and see if that works.. if all
>> good you can set an environment variable to handle more than 16 kB by
>> exporting EPICS_CA_MAX_ARRAY_BYTES in BOTH, IOC and command line where
>> caget is executed:
>>
>> # in IOC
>> epicsEnvSet EPICS_CA_MAX_ARRAY_BYTES 10000000
>>
>> # in terminal setting to 10Mb
>> export EPICS_CA_MAX_ARRAY_BYTES=10000000
>>
>> HTH, hinko
>>
>> On Tue, Apr 17, 2018 at 2:24 PM, Jörn Dreyer <j.dreyer@hzdr.de> wrote:
>> > I'm currently developing an areaDetector module for a sensor that delivers
>> > its information as double values. The code is ready, but I'm somehow not
>> > able to setup the ioc correctly to deliver the data in the NDStdArray.
>> > Looking with caget at the ArrayData it shows all values as zero.
>> >
>> > Here is what my dbLoadRecords line looks like:
>> >
>> > dbLoadRecords("$(ADCORE)/db/NDStdArrays.template", "P=$
>> > (PREFIX),R=image1:,PORT=Image1,ADDR=0,TIMEOUT=1,NDARRAY_PORT=$
>> > (PORT),TYPE=Float64,FTVL=FLOAT,NELEMENTS=8000")
>> >
>> > My question is, has anybody before tried to read floats? With another
>> > driver that reads UInt32 values, I succeeded to setup the ioc.
>> >
>> > Regards,
>> >
>> > Jörn Dreyer
>
>
> --
> Dr. Joern Dreyer
> HIBEF DAQ + Controls
> Institut für Strahlenphysik
> Helmholtz-Zentrum Dresden - Rossendorf e.V
> Abt. FWKX                Tel: +49 351 260 3263
>                                    FAX: +49 351 260 3700
> 01314 Dresden        eMail: j.dreyer@hzdr.de
>
> Helmholtz-Zentrum Dresden - Rossendorf e.V (HZDR)
> Bautzner Landstraße 400, 01328 Dresden
> Vorstand: Prof. Dr. Dr. h. c. Roland Sauerbrey, Dr. Ulrich Breuer
> Vereinsregister: VR 1693 beim Amtsgericht Dresden
>
>



-- 
.. the more I see the less I believe.., AE AoR

References:
areaDetector question Jörn Dreyer
Re: areaDetector question Hinko Kocevar
Re: areaDetector question Jörn Dreyer

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