Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Wed, 4 Jul 2012 11:57:17 +0000

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