DSC 8.0 : How can I develop a client/server architecture

[REM1]

You can tell it to be logged, or not, but you cannot specify the database.  I am looking into this now and will reply as soon as I can on this issue.

[REM1]

Just wanted to let you know I haven't forgotten about this thread.  I wrote a small utility to help with this but it is misbehaving.  I've got a couple people looking at it with me and we will get back as soon as we can.

[cs42]

Thanks for this information, it's nice to know!

Cheers,
    Carsten

[Mark_Zebitz]

Hi There

Just want to let you know, we are struggling with the same problems as Carsten.

Porting our LabVIEW DSC applications from LV 7.1 to LV 8 is a BIG problem.

We miss the Tag Engine Manager, and the SCF files way of handle the Tags, but can see many advantages of the Shared variables.

Please help us fill in the gap between DSC 7.1 and DSC 8 , to make the transfere easier. Specifically we can not seem to locate code for programtaically listing all shared variables in a project, nor located an easy method of (for instance) turning all Fieldpoint tags in a cFP controller with attached moduels into shared variables.

Kind regards

Søren and Mark
Haldor Topsøe A/S

[REM1]

Greetings Mark,

Can you give me specifics about what you miss from the Engine Manager and scf.  It may be that there are replacements for those of which you are unaware...or that something got missed that needs to be addressed.

Also, an update on the utility...it seems that it uncovered a bug in the system that is being looked at now.

Message Edited by REM1 on 05-08-2006 08:12 AM

[cs42]

Hi Robert,

is there any news on this issue? Maybe it is fixed in 8.20. I'd definitely like to test it. Unfortunately our local contact couldn't provide us a test version of the DSC RunTime for 8 and I fear it will be the same for 8.20. But as you might understand, I don't even want to spend the 300 € upgrade costs if I don't know if we can use it...

So long,
    Carsten

[REM1]

---

@cs42 wrote:
Hi Robert,

is there any news on this issue? Maybe it is fixed in 8.20. I'd definitely like to test it. Unfortunately our local contact couldn't provide us a test version of the DSC RunTime for 8 and I fear it will be the same for 8.20. But as you might understand, I don't even want to spend the 300 € upgrade costs if I don't know if we can use it...

So long,
    Carsten

---

Let me take a look.  I'm looking into a couple issues right now and have to so this in my free time so it may take a couple days.  Just to be sure...this is the utility to set the logging database in the runtime...correct?

[cs42]

Correct! I need a way to define tags and the database to store the data using the DSC Run Time Engine only, as it was possible in "the good old days"...

Thanks for investing you time,
    Carsten

[REM1]

Okay, here is a utility that will allow you to specify the logging database(s) for a given .lvlib file.

It was written in LabVIEW 8.2 (with DSC.)  The zip file includes both the unlocked source and the built utility for use in a runtime system.

This utility will only set the database information but once the library is deployed you can use the Variable Manager to configure tags in it.  The included .lvlib contains a single variable, UnusedPlaceholder, which can be deleted from the deployed process.  Renaming the library file will rename the process.

I have done only rudimentary testing on this but the app worked for me on a machine with only the DSC 8.2 runtime on it. 

The utility does not deploy libraries and I will be unable to post a utility to do that for a while.  It isn't difficult but I will be unavailable.

As with all things posted to the forums, by me at least, National Instruments neither supports nor guarantees it's functionality.

I hope this helps.

[cs42]

Thanks a lot! Once I get 8.2 including DSC RTE in my hands, I'll test it...

Cheers,
    Carsten