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*Date*: Wed, 05 May 2004 09:53:11 -0500*From*: David Bradley <bradley@xxxxxxxxxxxx>*Subject*: Re: equation

If you are using IISiBat to create your input file then the solution is simple. In TRNSYS 15, you must define an equation before you use it. IISiBat writes components and equations in the deck file in the order in which you added them to your project. So if you add the equations first, they will appear before the components. If you add your components first and your equations later, then you need to change the order in which IISiBat writes the input file. Click on the Component Control cards tool (icon of a page with the corner folded over in the toolbar at the left hand side of the screen) The third tab in the window that pops up allows you to change the component order. Find your equations in the list, click and hold on them, and slide them up so that they come before the components that use their result. Click on OK and your errors should go away. If not, please let me know and I will be happy to take a look at your input file and see if there is a subtler problem.

Kind regards,

David

Hello Trnsys users,

When inserting an additional equation into a project I get errors after connecting to a component:

***** ERROR ***** TRNSYS ERROR # 98 UNRECOGNIZED VARIABLE NAME OR BAD DATA CARD Pctl ***** ERROR ***** TRNSYS ERROR # 77 ILLEGAL INPUT SPECIFICATION FOUND *** INITIAL INPUT VALUES ***** ERROR ***** TRNSYS ERROR # 48 UNRECOGNIZED CONTROL CARD 20.0 5000 0.5

When creating a new project and first defining two equations and connecting them to components I do not get an error.

Does this mean that I FIRST have to create ALL equations before adding components? I hope there is a simple solution!

Thanks,

Henk Witte

------------------------------------------------ Groenholland b.v. Valschermkade 26 1059 CD Amsterdam The Netherlands

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**************************************************************************************** Thermal Energy System Specialists (TESS) David BRADLEY 2916 Marketplace Drive - Suite 104 Partner Madison, WI 53719 Phone: (608) 274-2577 USA Fax: (608) 278-1475 E-mail: bradley@xxxxxxxxxxxx Web Pages: http://www.tess-inc.com and http://www.trnsys.com

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**References**:**equation***From:*henkwitte

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