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

Subject: RE: Question about Edm dynamic display zone's fill color according to PVs
From: <[email protected]>
To: <[email protected]>
Date: Fri, 19 May 2017 09:34:50 +0000

Zhefu,

 

I suggest you consider introducing a fourth PV, PVd say, for the status to do the logic behind your meaningful colours (you still need the static definitions).

 

For example, if the three PVs were valve open/shut states on a Beamline End Station and the colours represented combinations of whether the system is ready to start a pump, move a motor, etc., having the logic buried in the GUI calc definition might make it a bit mysterious.  If you implement PVd its value will be available to other EPICS calculations, other GUIs, the archiver, the alarm handler, etc. 

 

You could also add an EDM symbol widget using PVd referring to an EDM symbol file with different coloured widgets in it instead or as well.

 

Furthermore consider whether a fifth PV is needed because the “blittering” between the red green and yellow colours you list suggests to me you have two statuses which might be better with their own separate widgets.  Alternatively, because the values are all zero or 1, you could make each bit in PVd a status flag use an EDM byte widget with number of bits property set to 2 to display them.  Each bit has the same on/off colour properties though, which may or may not be acceptable.

 

Linda

 

From: [email protected] [mailto:[email protected]] On Behalf Of Rolf Keitel
Sent: 09 May 2017 17:54
To: lzf neu; tech_talk
Subject: Re: Question about Edm dynamic display zone's fill color according to PVs

 

Hi Zhefu,

 

--- in the edmobjects directory in the colors.list file you need to define static colors (I just chose the indices 0,1,2,3,...):

static 0 blue { 0 0 65535 }

static 1 green-yellow { 0 65535 0 65535 65535 0 }

static 2 green-red { 0 65535 0 65535 0 0 }

rule 3 zone-fill {

 = 1 : blue

 = 2 : green-yellow

 = 3 : green-red

 default: blue

}

 

---  in the edmobjects directory in the calc.list file you need to define a calculated color:

zone-fill

A=1&&B=1?2:(A=0&&B=1&&C=1?3:1)

 

--- in your edm widget, e.g. a rectangle

set the fill-color to

zone-fill

set the Color PV to

CALC\zone-fill(PVa,PVb,PVc)

 

- rolf -

On 05/09/17 03:32, lzf neu wrote:

Hi,

I want to display the zone's fill color according to PVs.

In my case, rectangle zone's fill color depend on three PVs.

Let's assume PVa, PVb and PVc.

If PVc is equal to zero, then the rectangle's fill color is blue.

If PVa and PVb are both equal to 1, the rectangle zone's fill color is green and yellow blittering alternatively.

if PVa is 0 and PVb and PVc are both 1, then the zone's fill color is green and red blittering alternatively.

I have no idea how to do this by using edm, any help will be appreciated and thanks in advance.

Zhefu

 

 

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