[TRNSYS-users] How to deal with a constant input when programming a type

[Jeff Thornton via TRNSYS-users]

<As you probably know if you use the lock button, they are set to the
initial value in whole simulation.> 

That's not true for inputs. You can try it for yourself (we just did it
here). But you are correct in that unconnected inputs take their initial
values for the entire simulation. 

Jeff 

---
Jeff Thornton
President - TESS LLC
22 N. Carroll Street, Madison WI USA 53703
Office: (608) 274-2577 Fax: (608) 278-1475
www.tess-inc.com
E-Mail: thornton at tess-inc.com

On 03/10/2017 1:52 pm, Arian Bahrami via TRNSYS-users wrote: 

> Dear Javier 
> 
> It depends if your three input are connected to the output of the other components or not. If not, they will remain the same as initial, other wise if they are connected, their values will change with time. As you probably know if you use the lock button, they are set to the initial value in whole simulation. 
> 
> Best Regards, 
> 
> Arian 
> 
> Sent from my iPhone 
> 
> On 10 Mar 2017, at 8:21 pm, Javier Vega via TRNSYS-users <trnsys-users at lists.onebuilding.org> wrote:
> 
>> Hi TRNSYS users, 
>> 
>> Quick question. I'm programming a self-made type and I have 3 inputs that I'm setting in the model "just in case". The most probable thing is that I will set them to a constant zero through the whole simulation. The three inputs are interface heat transfer resistance coefficients. 
>> 
>> If I set the three inputs values to 0 in the component's project window (like in the example below), will it set that initial zero value for the entire simulation? Is it necessary to write any logical sentences in my program for that to happen? 
>> 
>> Thanks in advance!
>> Javier Vega Benavente
>> Mechanical Engineer and Magister Student, Universidad de Concepción, Chile. 
>> 
>> <image.png>
> 
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