RE: constant card: how can I do in iisibat?

["Michaël Kummert"" <kummert@xxxxxxxxxxxxxxx>]

Laurent,

Equations can be used as parameters. You can also use them as initial value
for inputs or derivatives.
However, you should only use equations that give a constant value to do
this, e.g:

Equations 1
MyPar=1.0

Unit 1 Type xxx

Parameters 3
1.0   MyPar   2.0

Inputs 2
1,1 1,2
0.0 MyPar

Derivatives 2
10.0 MyPar


Please note that If you use equations that vary with time or that include
Types outputs as a parameter, the equation will be evaluated only once and
you might get unexpected results.


Michael

  -----Original Message-----
  From: owner-trnsys@relay.doit.wisc.edu
[mailto:owner-trnsys@relay.doit.wisc.edu]On Behalf Of Laurent Serres
  Sent: Friday, April 05, 2002 01:55
  To: trnsys@relay.doit.wisc.edu
  Subject: Re: constant card: how can I do in iisibat?


  Michael,

  with "constant" statement, if I define a constant, I can use it in
parameters of several types.
  Can I do the same thing with "equation" statement?

  Regards,

  Laurent Serres.


    ----- Original Message -----
    From: Michael Kummert (SEL)
    To: trnsys@relay.doit.wisc.edu
    Sent: Thursday, April 04, 2002 5:48 PM
    Subject: RE: constant card: how can I do in iisibat?


    Laurent,

    The "Equation" statement is more flexible than the "Constants" statement
but gives the same result if you restrict the expression to the right of the
equal sign to a constant.
    So you can use the IISiBat "Assembly / Insert New Equation" command to
introduce constant expressions in your deck files.

    If you really want to use the "Constant" statement, you can add it to
the "Simulation cards" edit box in IISiBat Control cards (the place which
usually includes the "VERSION 15" line).

    Regards,

    Michael Kummert

      -----Original Message-----
      From: owner-trnsys@relay.doit.wisc.edu
[mailto:owner-trnsys@relay.doit.wisc.edu]On Behalf Of Laurent Serres
      Sent: Thursday, April 04, 2002 09:09
      To: trnsys@relay.doit.wisc.edu
      Subject: constant card: how can I do in iisibat?


      Dear TRNSYS users,

      I'm trying to obtain the same result with iisibat that I obtained with
CONSTANTS card in TRNSYS. I don't find in the help.
      How can I do?

      Thanks a lot.
      regards.

      SERRES Laurent
      IUT Génie Civil
      3, Rue du Clos Courtel
      BP 90422
      35704 RENNES CEDEX 7
      FRANCE
      Tel: (33) 2 23 23 42 02

      Fax: (33) 2 23 23 40 51

      e-mail: laurent.serres@univ-rennes1.fr