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RE: equation card

Uwe,

I do not see any problem when I run the example you give, if you:

- add a missing label at the end (the card says LABEL 4 and there are only 3 of them). This causes error 32 (no END statement) because Trnsys interpretes "END" as a label.

- change the scale of the right axis of the online plotter (0 8760 instead of 0 20). You will then be able to see that the value of lw_2 is correct. 


If you want to make sure all types use the correct value for their inputs, you can use the TRACE command.

Michael

PS As you say, Trnsys 14.2 and Iisibat 2 are quite old, so you could think to upgrade to Trnsys15 - Iisibat3...


_________________________________________________

Michael Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg
1500 Engineering Drive
Madison, WI 53706

Phone: +1 (608) 263-1589
Fax: +1(608) 262-8464
E-mail: kummert@sel.me.wisc.edu <mailto:kummert@sel.me.wisc.edu> 
 
SEL Web Site: http://sel.me.wisc.edu <http://sel.me.wisc.edu> 
TRNSYS Web Site: http://sel.me.wisc.edu/trnsys <http://sel.me.wisc.edu/trnsys> 




-----Original Message-----
From: owner-trnsys@relay.doit.wisc.edu
[mailto:owner-trnsys@relay.doit.wisc.edu]On Behalf Of Uwe Meinhold
Sent: Friday, January 18, 2002 10:13
To: trnsys@relay.doit.wisc.edu
Subject: equation card


Dear all,

I user sometimes the old version TRNSYS 14.2 with IISIBAT.
If I use the equation card the printer (type 25) write the calculated values
of the equation card. But other types (type56 or the online printer type 65)
did not work with the values of the equation card.

The following *.dck file shows my configuration.

Where is my mistake??  Thanks


*TRNSED
****************************************************************************
***
******* The file appartening to : root
******* Realisation date : Fri Jan  11  2 15:24:50
****************************************************************************
***

ASSIGN \trnwin\iisibat2\appli\root\simul\example.LST 6

******* Control cards
CONSTANTS 3
START=1
STOP=8760
STEP=1
*          Start time   End time   Time step
SIMULATION START STOP STEP
*          Integration   Convergence
TOLERANCES 0.01 0.01
*          Max iterations   Max warnings   Trace limit
LIMITS 25 10 25
*          TRNSYS numerical integration solver method
DFQ 1
*          TRNSYS output file width, number of characters
WIDTH 72
*          List statement
LIST
*          Solver statement
SOLVER 0
*          Equations
EQUATIONS 2
   LW_1=12
   LW_2=TIME

*--------------------------------------------------------------------------*
*|*
*|*  ******* UNIT 2 TYPE 25 TYPE25-1 *******
*|*PARAMETERS                                              VALUES      UNITS
CONSTANTS 5
PRIN=1
*|Printing_interval                        |hr|hr|0|1|-12|1000000|1000
STAR=0
*|Start_time                               |hr|hr|0|1|0|1000000|1000
STOP1=8760
*|Stop_time                                |hr|hr|0|1|0|1000000|1000
LOGI=17
*|Logical_unit                             |||0|1|10|30|1000
PRIN1=2
*|Print_TRNSYS_units                       |||0|1|2|2|1000
UNIT 2 TYPE 25 TYPE25-1
PARAMETERS 5
* 1 Printing interval
PRIN
* 2 Start time
STAR
* 3 Stop time
STOP1
* 4 Logical unit
LOGI
* 5 Print TRNSYS units
PRIN1
INPUTS 2
* 1 Input to be printed-1
LW_1
* 2 Input to be printed-2
LW_2
*** INPUT  VALUES
LW_1 LW_2
******* External file
ASSIGN LW.PLT 17

*--------------------------------------------------------------------------*
*|*
*|*  ******* UNIT 1 TYPE 65 TYPE65-1 *******
*|*PARAMETERS                                              VALUES      UNITS
CONSTANTS 14
C_OF=1
*|#_of_left_axis_variables                 |||0|1|1|10|1000
C_OF1=1
*|#_of_right_axis_variables                |||0|1|1|10|1000
LEFT=0
*|Left_axis_minimum                        |||0|1|-1000000|1000000|1000
LEFT1=20.0
*|Left_axis_maximum                        |||0|1|-1000000|1000000|1000
RIGH=0.0
*|Right_axis_minimum                       |||0|1|-1000000|1000000|1000
RIGH1=20.0
*|Right_axis_maximum                       |||0|1|-1000000|1000000|1000
UPDA=1
*|Update_plot_every_i_timesteps            |||0|1|1|1000000|1000
UPDA1=1
*|Update_values_every_i_timesteps          |||0|1|1|1000000|1000
UNIT=3
*|Unit_indicator                           |||0|1|1|3|1000
NUMB=1
*|Number_of_plots_per_simulation           |||0|1|1|1000000|1000
X_AX=7
*|X_axis_gridpoints                        |||0|1|1|1000000|1000
STOP2=1
*|Stop_indicator                           |||0|1|0|1|1000
SYMB=2
*|Symbol_indicator                         |||0|1|1|2|1000
HPGL=0
*|HPGL_output_indicator                    |||0|1|0|1|1000
UNIT 1 TYPE 65 TYPE65-1
PARAMETERS 14
* 1 # of left-axis variables
C_OF
* 2 # of right-axis variables
C_OF1
* 3 Left axis minimum
LEFT
* 4 Left axis maximum
LEFT1
* 5 Right axis minimum
RIGH
* 6 Right axis maximum
RIGH1
* 7 Update plot every i timesteps
UPDA
* 8 Update values every i timesteps
UPDA1
* 9 Unit indicator
UNIT
* 10 Number of plots per simulation
NUMB
* 11 X-axis gridpoints
X_AX
* 12 Stop indicator
STOP2
* 13 Symbol indicator
SYMB
* 14 HPGL output indicator
HPGL
INPUTS 2
* 1 Left axis variable-1
LW_1
* 2 Right axis variable-1
LW_2
*** INPUT  VALUES
LW_1 LW_2
LABELS 4
NUTS
APPLES
PEARS

*--------------------------------------------------------------------------*

END