[Dsg-dc] gas shed cRio

[Brian Eng]

No CPU usage + active heartbeat is normal, it just means it's running the startup application vs being run manually.

It could have been a network issue as well as power, either will cause the effect.

I've enabled the debug mode on the GS cRIO (this prevents the MFC loop from stopping after 3 errors) so we can see which one is misbehaving if this happens again.

----- Original Message -----
> From: "Morgan Cook" <mcookiv at jlab.org>
> To: "Marc McMullen" <mcmullen at jlab.org>
> Cc: "Brian Eng" <beng at jlab.org>, "dsg-dc" <dsg-dc at jlab.org>
> Sent: Thursday, June 21, 2018 8:14:59 AM
> Subject: Re: gas shed cRio

> The R3 manifold reedback was back on-line when I checked everything in the
> afternoon.  Any idea what happened?  In the morning, there was a heartbeat to
> the cRio, but no cpu usage.  The MFCs were on, valve positions looked like they
> were open, but the flow was 0.  Yet, R1 and R2 had gas flow in the hall.  R3
> did not, but the manifold pressure was essentially 0 so that makes sense.
> 
> I don't know what could've caused this other than some power blip. Any thoughts?
> 
> -Morgan
> 
> ----- Original Message -----
> 
> I went over to the gas shed to investigate. All MFC were on, so I rebooted the
> cRIO. The R3 manifold readback is still not showing pressure. The current
> pressure in mix tank 1 is 86.8. This concurs with the gauge on the tank.
> 
> Marc McMullen
> Physics Division
> Detector Support Group
> 7738
> 
> 
> From: "Brian Eng" <beng at jlab.org>
> To: "Morgan Cook" <mcookiv at jlab.org>
> Cc: "Marc McMullen" <mcmullen at jlab.org>, "dsg-dc" <dsg-dc at jlab.org>
> Sent: Wednesday, June 20, 2018 9:01:24 AM
> Subject: Re: gas shed cRio
> 
> Looks like that cRIO was rebooted ~5 min ago before I could look into what/if
> anything was wrong.
> 
> ----- Original Message -----
>> From: "Morgan Cook" <mcookiv at jlab.org>
>> To: "Marc McMullen" <mcmullen at jlab.org>, "Brian Eng" <beng at jlab.org>
>> Cc: "dsg-dc" <dsg-dc at jlab.org>
>> Sent: Wednesday, June 20, 2018 7:52:18 AM
>> Subject: gas shed cRio
> 
>> Gentlemen,
>> 
>> It looks like there's an issue with the gas shed cRio. All of the mfcs show an
>> open valve position, but no flow through them; the R1-2 control pressure is not
>> reading.
>> 
> > -Morgan