[Dsg-hallb_magnets] IDCCT scaling in labview

[Ruben Fair]

Ok

> On Jan 18, 2017, at 12:00 PM, Tyler Lemon <tlemon at jlab.org> wrote:
> 
> Hello,
> 
> The cRIO is back online.
> 
> I seem to be having a problem with GitHub, which is what caused the delay. I will be sending another email with a description of the issue soon.
> 
> Best regards,
> Tyler
> 
> From: "Ruben Fair" <rfair at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "Nicholas Sandoval" <sandoval at jlab.org>, "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Probir Ghoshal" <ghoshal at jlab.org>
> Sent: Wednesday, January 18, 2017 11:29:13 AM
> Subject: Re: IDCCT scaling in labview
> 
> No problem Tyler
> 
> R
> 
> On Jan 18, 2017, at 11:28 AM, Tyler Lemon <tlemon at jlab.org> wrote:
> 
> Hello Ruben and Nick,
> 
> It seems to be taking longer than expected to get the program back up running. It will be more than my initial estimate of 15 minutes.
> 
> Tyler
> 
> From: "Nicholas Sandoval" <sandoval at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Probir Ghoshal" <ghoshal at jlab.org>, "Ruben Fair" <rfair at jlab.org>
> Sent: Wednesday, January 18, 2017 11:25:27 AM
> Subject: Re: IDCCT scaling in labview
> 
> Perfect.  I just made the change in the PLC.  
> 
> Thanks,
> 
> Nick
> 
> ----- Original Message -----
> From: "Ruben Fair" <rfair at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "Nicholas Sandoval" <sandoval at jlab.org>, "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Probir Ghoshal" <ghoshal at jlab.org>
> Sent: Wednesday, January 18, 2017 11:22:17 AM
> Subject: Re: IDCCT scaling in labview
> 
> Thank you Tyler
> 
> R
> 
> > On Jan 18, 2017, at 11:21 AM, Tyler Lemon <tlemon at jlab.org> wrote:
> > 
> > Hello Nick,
> > 
> > Okay, just IDCCT1 scaling has been changed.
> > 
> > The changes have been made in the LabVIEW and I will deploy it within the next few minutes. I will then set the modified program as the start-up application. It'll take maybe 15 minutes until the cRIO is back up.
> > 
> > Best regards,
> > Tyler
> > 
> > From: "Nicholas Sandoval" <sandoval at jlab.org>
> > To: "Tyler Lemon" <tlemon at jlab.org>
> > Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Ruben Fair" <rfair at jlab.org>, "Probir Ghoshal" <ghoshal at jlab.org>
> > Sent: Wednesday, January 18, 2017 11:11:56 AM
> > Subject: Re: IDCCT scaling in labview
> > 
> > Hi Tyler,
> > 
> > Please just scale IDCCT1.  The reason is the PLC DINT data type is limited( -2,147,483,648 to 2,147,483,647).  When we get the DINT in the PLC and the current is over 2,147A it 'freezes'.  
> > 
> > You can see this behavior in the archive when plotting both IDCCT(I_ZFCT in EPICs) and I_MPS(Danfysik readback) during the high current runs in November. 
> > 
> > We want to keep the resolution on the voltage taps the same, as we do not get close to this limitation.
> > 
> > Thanks,
> > 
> > Nick
> > 
> > ----- Original Message -----
> > From: "Tyler Lemon" <tlemon at jlab.org>
> > To: "Nicholas Sandoval" <sandoval at jlab.org>, "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Ruben Fair" <rfair at jlab.org>, "Probir Ghoshal" <ghoshal at jlab.org>
> > Sent: Wednesday, January 18, 2017 10:59:02 AM
> > Subject: Re: IDCCT scaling in labview
> > 
> > Hello Nick, 
> > 
> > Right now, the way IDCCT1 data is scaled by one million also scales the voltage taps by one million. 
> > 
> > Do we want the Voltage Taps to stay scaled by one million or should they also be changed to 100,000? 
> > 
> > Tyler 
> > 
> > 
> > From: "Nicholas Sandoval" <sandoval at jlab.org> 
> > To: "Tyler Lemon" <tlemon at jlab.org> 
> > Cc: "Ruben Fair" <rfair at jlab.org>, "Probir Ghoshal" <ghoshal at jlab.org> 
> > Sent: Wednesday, January 18, 2017 10:40:07 AM 
> > Subject: IDCCT scaling in labview 
> > 
> > Hi Tyler, 
> > 
> > Can you please change the multiplier for IDCCT1 in the labview logic. I believe it is scaled by a million at the moment, please change it to 100,000. 
> > 
> > This will prevent us from hitting the hardware limit on the PLC readout. Let me know when you are complete as I will need to do the same in the PLC 
> > 
> > Thanks, 
> > 
> > Nick
> 
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