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<div dir="ltr">Hi Bill,</div>
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<div dir="ltr">I tested your environment change on the Pi using the command line, it at least gave access to the PVs on the IOC. I am trying to add the CA address list to the Bashrc file. </div>
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<div dir="ltr">What I am not sure is that those PVs are accessible on the accelerator computers. Have you checked to see if you could access the PVs values using the Wave tool? </div>
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<div dir="ltr">I had to bring the Pi back to my office to work on it. I am trying to reinstall it tomorrow sometime?</div>
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<div dir="ltr">Marc</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> William Henry <wmhenry@jlab.org><br>
<b>Sent:</b> Thursday, February 27, 2025 1:39:10 AM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org>; dsg-hallc_gem@jlab.org <dsg-hallc_gem@jlab.org><br>
<b>Subject:</b> Re: Two channel GEM monitoring system</font>
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Marc,</div>
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Try setting this environmental variable, it worked for me (see below). In a terminal do</div>
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<div>export EPICS_CA_ADDR_LIST="129.57.147.143"</div>
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then you should be able to caget the variables. That is the IP address of the virtual machine the IOC is running on. I added that line to my .login file.</div>
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Regards,</div>
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Bill</div>
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pi@raspberrypi:~/epics/base/bin/linux-arm $ ./caget HCGEM:gas:ch01</div>
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Channel connect timed out: 'HCGEM:gas:ch01' not found.</div>
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pi@raspberrypi:~/epics/base/bin/linux-arm $ export EPICS_CA_ADDR_LIST="129.57.147.143"</div>
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pi@raspberrypi:~/epics/base/bin/linux-arm $ ./caget HCGEM:gas:ch01</div>
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HCGEM:gas:ch01 0</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Dsg-hallc_gem <dsg-hallc_gem-bounces@jlab.org> on behalf of Marc Mcmullen <mcmullen@jlab.org><br>
<b>Sent:</b> Wednesday, February 26, 2025 5:04 PM<br>
<b>To:</b> dsg-hallc_gem@jlab.org <dsg-hallc_gem@jlab.org><br>
<b>Subject:</b> [Dsg-hallc_gem] FW: Two channel GEM monitoring system</font>
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<p class="x_x_MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">Marc Mcmullen <mcmullen@jlab.org><br>
<b>Date: </b>Wednesday, February 26, 2025 at 2:02 PM<br>
<b>To: </b>dsg-hallc_gem@jlab.org <dsg-hallc_gem@jlab.org><br>
<b>Subject: </b>Two channel GEM monitoring system</span></p>
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<p class="x_x_MsoNormal">Hi Holly,</p>
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<p class="x_x_MsoNormal">The system installation was completed earlier today. </p>
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<p class="x_x_MsoNormal">There is some issue with the PVs on the IOC. The PVs are not available on the 168 subnet. Bill Henry is looking into this. </p>
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<p class="x_x_MsoNormal">But I was able to confirm that the software runs on the Raspberry Pi. Once Bill gets the PVs running, he’ll let me know and I’ll start the software. </p>
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<p class="x_x_MsoNormal">Bill also said that Hall C would connect the gas lines to the flow sensor box. If he needs guidance with that our gas system specialist George Jacob’s can be contacted through this mailing list. </p>
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<p class="x_x_MsoNormal">The Gas lines attach a the quick connects on the GEM gas monitor box (see attached photo). </p>
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<p class="x_x_MsoNormal">Regards,</p>
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<p class="x_x_MsoNormal">Marc</p>
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