Dear TRNSYS-users, accordingly to TRNSYS Volume 6 TRNEdit, we can use the functions eqwarn, gtwarn, gewarn and newarn to generate a notice, warning or error (set as third argument), after first and second _expression_/argument are compared. (The description in the documentation is quite wrong, the error is generated if function is TRUE) I’m using this function to stop early simulations and reduce processing time e.g. after a temperature is too often too low. I got some problems with this. 1. The functions generate an error, even if I set the third argument to  0 or 1 for notice or warning. 2. The function compares all iteration of a timestep. This means, even if the comparison of two values at the END of a timestep is FALSE, it generate the error. Regarding Point 1: The SourceFile Eval.f90 has a part for Fatal and Warning: I think a change of the second FATAL to WARNING should work, but where is the notice Part? Case (33) !eqwarn    If (stack(top) == stack(top+1)) Then       stack(top) = 1.d0                  If (stack(top+2) > 1.5) Then          Call Messages(617,atemp,'FATAL',-1,-1) !Generate an error message                     eval = -99999.d0                     Return                  ElseIf (stack(top+2) > 0.5) Then          Call Messages(617,atemp,'FATAL',-1,-1) !Generate an error message                     eval = -99999.d0                     Return       EndIf    Else       stack(top) = 0.d0    EndIf Regarding Point 2: How can the calculation of an Equation be done only at the end of a timestep (like a Printer)? Right now I’m using the saved values of last timestep, but maybe it’s possible to set the calculation of these warn-function to “After Convergence”? Every Type has this “If(getIsEndOfTimestep()) Then”-Part. I’m grateful for any ideas. Chris ________________________________________________________________ M.Sc. Christoph Büttner Abteilung Solare Systeme Solar systems department Arbeitsgruppe Thermische Energiesysteme Workgroup Thermal Energy Systems Institut für Solarenergieforschung GmbH Am Ohrberg 1 D-31860 Emmerthal Phone: +49 (0) 5151 999 647 Fax: +49 (0) 5151 999 400 eMail: ch.buettner@isfh.de Internet: www.isfh.de Handelsregister: Amtsgericht Hannover HRB 100547 Geschäftsführer: Prof. Dr. Rolf Brendel Vorsitzender des Aufsichtsrats: Ministerialrat Dr. Sebastian Huster ________________________________________________________________ Â¥2019 ISFH [1546297200] |