EPICS AreaDetector ADAndor: Scan hangs because Acquire="Collecting" when acquisition finished (DetectorState

Experimental Physics and Industrial Control System

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Subject:

AreaDetector ADAndor: Scan hangs because Acquire="Collecting" when acquisition finished (DetectorState_RBV='idle')

From:

David Vine via Tech-talk <[email protected]>

To:

[email protected]

Date:

Wed, 10 Jul 2019 09:18:08 -0700

Hi all,

very infrequently my scan hangs because ADAndor acquire state stays "collecting" after the acquisition completed successfully and detector state returns to "idle" and detector status is "IDLE, waiting on instruction". Screen shot of the medm screen below.

The IOC output doesn't have any message indicating there is a problem.

If i click "stop" the Acquire state goes to "Done" however the scan does not continue. If i click "start" the detector responds normally, acquires one image and everything looks good. At the conclusion of the image that I started manually the scan will continue.

I don't know how to reproduce this on demand. It's happening once every few thousands of images. Any tips on how to troubleshoot it next time it happens would be greatly appreciated.

ADCore: 3.3.1

Driver: 2.8.0

SDK: 2.102

Thanks,

David

Best regards,

David Vine

(925) 326 7503

[email protected]

5750 Imhoff Drive, Suite I | Concord, CA 94520 | USA

http://www.Sigray.com

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