Experimental Physics and
Industrial Control System

"Steve Kinder" <[email protected]> · Wed, 4 Jul 2012 21:43:44 +0100

Hi Mark

Thanks for that, has enabled me to make progress and saved me time looking

through the source. Should be able to get things working as I want now.

Steve

-----Original Message-----

From: Mark Rivers

Sent: Wednesday, July 04, 2012 12:57 PM
To: Steve Kinder ; tech-talk
Subject: RE: ImageJ from waveform record

Hi Steve,

The ImageJ plugin assumes that the EPICS PVs are named as follows, which are

the names in the NDPluginStdArrays plugin in areaDetector:

           ch_nx = createEPICSChannel(PVPrefix + "ArraySize0_RBV");
           ch_ny = createEPICSChannel(PVPrefix + "ArraySize1_RBV");
           ch_nz = createEPICSChannel(PVPrefix + "ArraySize2_RBV");
           ch_colorMode = createEPICSChannel(PVPrefix + "ColorMode_RBV");
           ch_image = createEPICSChannel(PVPrefix + "ArrayData");
           ch_image_id = createEPICSChannel(PVPrefix + "UniqueId_RBV");

PVPrefix: There are no limitations on what the PVPrefix is.

ColorMode_RBV
 0: mono, ArraySize0_RBV=NX, ArraySize1_RBV=NY
 1: Bayer, ArraySize0_RBV=NX, ArraySize1_RBV=NY
 2: RGB1, ArraySize0_RBV=3, ArraySize1_RBV=NX, ArraySize2_RBV=NY
 3: RGB2, ArraySize0_RBV=NX, ArraySize1_RBV=3, ArraySize2_RBV=NY
 4: RGB3, ArraySize0_RBV=NX, ArraySize1_RBV=NY, ArraySize2_RBV=3

ArrayData: The waveform record.

UniqueId_RBV: This is a number that must increment when a new image is

available. The viewer puts a CA monitor on this PV and does a ca_get() on

the ArrayData PV. It does not put a monitor on the ArrayData PV directly,

because it would then need to change its subscription each time the

dimensions or color mode of the image changed, or else it would not get the

correct size.

If you have PVs in your IOC that have this naming convention and behavior

then it should work.

Mark

________________________________

From: [email protected] [[email protected]] on

behalf of Steve Kinder [[email protected]]

Sent: Wednesday, July 04, 2012 6:04 AM
To: tech-talk
Subject: ImageJ from waveform record

Is it possible to use the ImageJ plugin to display data being put into a

waveform record from a source other than AreaDetector? I have an IOC with

image data in a waveform and corresponding NX/NY/NZ records. I’m not sure

what to use for the PVPrefix. I have just used the waveform record name,

plus a :, but I get “Cannot connect to EPICS PVs” errors. I suspect this

must be wrong.

Thanks

Steve

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System