<div dir="ltr">Hi David,<div>Thanks for the quick response. I reset my global parameter to numeric, and entered the input expression as you specified, but I'm now getting the following error message:</div><div>"Expression Parsing Error: Invalid function name 'SYSTEM' 5"</div>
<div><br></div><div>Any thoughts?</div><div><br></div><div>Thanks,</div><div><br></div><div>John</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Dec 11, 2013 at 2:29 PM, David Griffin <span dir="ltr"><<a href="mailto:dgriffin@etcgrp.com" target="_blank">dgriffin@etcgrp.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">John,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">Try using an expression like the following which uses a ‘numeric’ global parameter rather than a ‘symbol’.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">if(#PA("Enthalpy Wheel On/Off ")=1)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">then<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">#SI("YES","SYSTEM","RECOVER-EXHAUST")<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">else<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">#SI("NO","SYSTEM","RECOVER-EXHAUST")<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">endif<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">This expression is a work around to some issues I’ve found in eQuest using ‘symbol’ global parameters. Just set the global parameter to 1 and change it to anything
else in the parametric run to change the value or vice versa. Let me know how it goes.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d"><u></u> <u></u></span></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">Thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d"><u></u> <u></u></span></b></p>
<p class="MsoNormal" style="margin-left:4.5pt"><b><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d">David W. Griffin II<u></u><u></u></span></b></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial","sans-serif";color:#17365d"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> J R [mailto:<a href="mailto:john.reed.other@gmail.com" target="_blank">john.reed.other@gmail.com</a>]
<br>
<b>Sent:</b> Wednesday, December 11, 2013 10:07 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Changing words with global parameters / parametric runs?<u></u><u></u></span></p>
</div><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Hi Everybody,<u></u><u></u></p>
<div>
<p class="MsoNormal">First off, as a relatively new eQUEST user, the past discussions in the archives has been immensely helpful in troubleshooting issues, so thanks to everybody for responding to questions from eQUEST rookies like myself. Now, for the new
questions:<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
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<div>
<p class="MsoNormal">I've developed a model in detailed mode that I would like to make some parametric runs for to run alternative scenarios. For numeric inputs, I haven't run into any issues, but I'm wondering if there's a way to change words using global
parameters too. Specifically, I'd like to add an enthalpy wheel in the parametric run by adjusting the yes/no option under my AHU's heat recovery 1 tab: "ERV device installed" Yes/No dropdown. These are the steps I've taken.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
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<ul type="disc">
<li class="MsoNormal">
Create new global parameter: "Enthalpy Wheel On/Off"<u></u><u></u></li></ul>
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<ul type="circle">
<li class="MsoNormal">
Parameter type: "New Symbol"<u></u><u></u></li><li class="MsoNormal">
Parameter value: "No"<u></u><u></u></li></ul>
</ul>
<ul type="disc">
<li class="MsoNormal">
Right click device Installed dropdown: User Input Expression - I tried two different expressions:<u></u><u></u></li></ul>
<ul type="disc">
<ul type="circle">
<li class="MsoNormal">
#SI(#PA("Enthalpy Wheel On/Off"),"SYSTEM","RECOVER-EXHAUST")<u></u><u></u></li></ul>
</ul>
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<ul type="circle">
<ul type="square">
<li class="MsoNormal">
Error Message: Expression Evaluation Error: BDL Symbol 'No' not found<u></u><u></u></li></ul>
</ul>
</ul>
<ul type="disc">
<ul type="circle">
<li class="MsoNormal">
#parameter("Enthalpy Wheel On/Off")<u></u><u></u></li></ul>
</ul>
<ul type="disc">
<ul type="circle">
<ul type="square">
<li class="MsoNormal">
Invalid symbol assignment (symbol table index = 0)<u></u><u></u></li></ul>
</ul>
</ul>
<ul type="disc">
<li class="MsoNormal">
If the above error were solved, my next step would be to create a parametric run, component type: symbolic global parameter, and change the value to "yes".<u></u><u></u></li></ul>
<p class="MsoNormal">I have no doubt that I'm using the wrong language for what I'm trying to accomplish, but don't know what other approach to take. Any advice would be greatly appreciated.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Also, on a more general note, does anybody have a good resource they could share that is more or less an eQUEST detailed mode guide? I've found the intro, wizard, and DOE2 guides on the eQUEST site, but it seems like there is a lot of functionality
with the program in detailed mode that isn't really explained anywhere.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks in advance for your help!<u></u><u></u></p>
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<div>
<p class="MsoNormal"><u></u> <u></u></p>
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<div>
<p class="MsoNormal">John<u></u><u></u></p>
</div>
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