Experimental Physics and
Industrial Control System

Hi Peng,

 > prosilica:writeFloat64: error, status=18 function=51, name=ACQ_PERIOD, value=0.040000

That message can appear on startup because at iocInit it is setting an AcquirePeriod that is inconsistent with the AcquireTime.  It depends on the order in save/restore.  I should fix it, but it is just a warning, and is not serious at all, so don't worry about it.

> Matlab automatically shut off. Did anyone know why? 

Did you set EPICS_CA_MAX_ARRAY_BYTES to a large enough value on both the client and server computers?  I have never used Matlab, but I seem to recall hearing that the Channel Access interface only supports reading arrays as doubles (64-bit floating points).  If so, you need to multiply EPICS_CA_MAX_ARRAY_BYTES by 8 over what you would normally use, since the Prosilica is normally sending 8-bit data.  If that is true it makes Matlab quite inefficient for video data.  IDL and ImageJ may be better for imaging clients, since they support reading 8-bit arrays.

Mark

 

 

 

________________________________

From: [email protected] on behalf of ?
Sent: Wed 11/9/2011 5:31 AM
To: [email protected]
Subject: About the problem of areaDetector module's compiling and run


Dear 
    I met some problems. When I ran the areaDetector module, it appeared such mistakes. 

 prosilica:writeFloat64: error, status=18 function=51, name=ACQ_PERIOD, value=0.040000
 13PS1:cam1:AcquirePeriod devAsynFloat64 process error

When I ran it again, this mistake was gone.Did someone come across the problem? How to solve it? Meanwhile there was other question. I used Matlab to read the PV(13PS1:image1:ArrayData). When I used the command that was "A = lcaGet('13PS1:image1:ArrayData');" , Matlab automatically shut off. Did anyone know why?

  Thanks!

Best wishes

                                                                                           Peng

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