Experimental Physics and
Industrial Control System

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

Subject:	ADEiger R3-12-1 TriggerMode Puzzle
From:	John Dobbins via Tech-talk <tech-talk at aps.anl.gov>
To:	"tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date:	Tue, 5 Jul 2022 15:09:44 +0000

All,

I had been using ADEiger R2-7 with an EIGER2 and saw in the release notes for R2-8 a fix for a problem I observed:

Fixed a problem that occurs with 2020.2.2 firmware on the Eiger2.
Changing the TriggerMode to Internal Enable ("inte") or External Enable ("exte") fails if NumImages is not 1. The driver was changed to set NumImages=1 just before changing TriggerMode to either of these values.

I have updated to ADEiger R3-12-1 and still see this behavior, so I am puzzled.

i.e. if NumImages ~= 1, then trying to set TriggerMode = InternalEnable or ExternalEnable generates error messages at the IOC console

epics> RestApi::put: [param=trigger_mode] server returned error code 400

2022/07/05 10:52:16.546 Param[TRIGGER_MODE]::basePut: [param=TRIGGER_MODE] underlying RestAPI put failed

2022/07/05 10:52:16.546 Param[TRIGGER_MODE]::put<int>: [param=TRIGGER_MODE] underlying basePut failed

2022/07/05 10:52:16.546 eigerDetector::writeInt32: error status=1 function=81, value=1

2022/07/05 10:52:16.546 EIG500:EIG:TriggerMode devAsynInt32::processCallbackOutput process write error

Did I go wrong somewhere?

EIGER2 Firmware Version release-2020.2.6

SDK version 1.8.0

Driver Version 3.4.0

ADCore versioin 3.12.1

Another question: I see that the readback for various PVs display on the MEDM screen in yellow. They have .STAT = STATE. Looking at the MEDm screen shots in the ADEiger documentation this appears to be intentional.

EIG500:EIG:Threshold1Enable_RBV

EIG500:EIG:FWEnable_RBV

EIG500:EIG:FlatfieldApplied_RBV

EIG500:EIG:CountrateCorrApplied_RBV

EIG500:EIG:PixelMaskApplied_RBV

EIG500:EIG:AutoSummation_RBV

EIG500:EIG:ArrayCallbacks_RBV

Thanks,

John Dobbins

Research Support Specialist

Cornell High Energy Synchrotron Source

Cornell University