CAPE-OPEN

Hi Jasper,
as you indicated a while ago, apart from getting data from a flowsheet, it also is possible to set values from external sources. I'm trying to make flowsheets and results available to my colleagues, with some opportunities of changing some data: T,P and feed compositions (to some extent).

I would prefer an Excel-based I/O, where results may be presented, and to some extent input data (temperature, pressure, feed fractions, a U.A factor in heat exchangers, etc) changed.
The best thing: most of it already is available!
* a good development environment for model creation and basic data reference. To me COFE is a perfect hatstand to build upon.
* COFE provides an excellent Excel integration
* From other sources OPC integration, and real time data, is available

Only one thing lacking : the setters for temperature, pressure, feed fractions, and e.g. U.A for a HeatX? Could you please give me a hint, preferably some code snippets, on how to make this working?

Wish you and all board members a happy and loving New Year!
Henk

Also note that you are not bound to Excel for doing this; any environment that easily supports automation, for example VB.net, can be used to drive COFE.

Hi Jasper,
I will try this option and report the results. I'm aware of other, and maybe more convenient environments that suit my needs, but I like to incorporate thie options within a VBA environment.
Many thanks!
regards, Henk

Good morning all,

I desperatly try to set parameters on my COCO file with VBA but I don't manage to do so.

I tried the SetStreamTemperature you defined in previous post but it returns an error : str1.SetProp("temperature", "overall", Empty, "", "", v) (= is needed).
Moreover, I don't manage to make this subroutine accessible in the Macros windows.

Besides, I noticed that the COFE_CompleteCOFERecalc() Macro doesn't seem to work well on my file. Everytime, I set MANUALLY a parameter (for instance a Temperature in the first stream), It doesn't converge and I get the following message :

warning: Simulation Context error in ICapeMaterialTemplateSystem::CreateMaterialTemplate: Invalid stream type name
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Simulation Context error in ICapeMaterialTemplateSystem::CreateMaterialTemplate: Invalid stream type name
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Simulation Context error in ICapeMaterialTemplateSystem::CreateMaterialTemplate: Invalid stream type name
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values
warning: Material object error in GetComponentConstant: No data
warning: Material object error in GetComponentConstant: One or more missing values


Would someone be able to help me or to send me a working file with setter so that I could be inspired xD.

Thank you very much for your help.
Best regards,
Kevin

Please note that setting data on the flowsheet is not always safe: https://www.cocosimulator.org/index_hel ... mation.htm

Setting parameter values on unit operations should mostly be ok though.

Can you provide me with the exact error message?

The Macro window shows all public functions that have no arguments. Make sure your macro is public and has no arguments. If the macro is public but does have arguments, you can still use it as a formula from within an Excel cell.

Can you attach an Excel worksheet that demonstrates the problems with COFE_CompleteCOFERecalc?

Hi Jasper,

Thank you for your prompt reply. I didn't expect it that quickly

You can find the excel file as attached. It is just a simple flash with I am trying to communicate...
Honestly, It's been a long time since I haven't code in VBA so I may miss some skills...

If you have a working file with "Set" so that I could be inspired it would be great.

For scripts, I will have a look for sure.

Best regards,
Kevin

I see an error on the "access unit operations example" page, cell G5 contains no unit name or index.

Other than that I am not sure what you are trying to do and where. Can you describe what you want to do with this sheet and provide me with steps to reproduce your issue?