[TRNSYS-users] Run time error "Invalid float point operation"
David Bradley
bradley at tess-inc.com
Sat Feb 9 04:05:28 PST 2008
Chun Kwon,
An invalid float point error is a generic error generated by
Fortran and can be caused by a lot of things (division by zero, log
of a negative number). From outside the Fortran compiler, it is not
really possible to tell what happened. If you are not using any
user-written types, you can contact your distributor for assistance
in finding out what went wrong. If you are using a user-written Type,
you can get some idea if you turn on TRNSYS's "debugging" mode by
changing the value of field 9 in the Simulation Studio control cards
(where you change the simulation start and stop times). This will
tell you if TRNSYS found a component's output set to the "NaN" (not a
number) condition, or if a component wrote to an output outside the
range that it reserved for itself. If that doesn't show you anything,
then I would suggest running your simulation from within the Compiler
so that you can put in breakpoints and walk line by line through the
code to find out where it is going wrong. There are some tips on how
to do this in the 08-Programmer's Guide manual.
Cheers,
David
At 20:17 2/8/2008, h8304506 at hkusua.hku.hk wrote:
>Dear Trnsys users.
>
>When I ran my simulation of a liquid desiccant dehumidifier, the
>captioned error occurred. Does anyone know what is the likely cause
>of such error. Thank you!
>
>Best Regards
>LEE, Chun Kwong
>PhD student
>Department of Mechanical Engineering
>University of Hong Kong
>
>
>
>
>_______________________________________________
>TRNSYS-users mailing list
>TRNSYS-users at engr.wisc.edu
>https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
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Phone: (608) 274-2577 USA
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E-mail: bradley at tess-inc.com
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