Open datasocket connection error 42

[eaguero]

Yes wiebe@CARYA, for me, it sounded like DCOM in OPC but I think Pataclaque is not using an OPC server.

As you may see in this White Paper http://www.ni.com/white-paper/12402/en/; the datasocket uses TCP port 3015 (for DSTP) and it should be opened in the firewall of both server and client.

If this is already so, then, I would try to use an example of LabVIEW. Are you using an example as Simple DataSocket.lvproj that is in the LabVIEW example finder

[Pataclaque]

Yes I did.

Computer A:  I had to re-installed Windows 8 and LabVIEW 2012.

Computer B: It stays the same and run the executable that we are talking about.  It tries to "Open Datasocket Connection" to a shared variable located on the Computer A.

Michel

[Pataclaque]

No, I'm using the same code that was working like a charm prior the re-installation of Windows 8 on Computer A.

[wiebe@CARYA]

---

@eaguero wrote:

Yes wiebe@CARYA, for me, it sounded like DCOM in OPC but I think @Pataclaque is not using an OPC server.

As you may see in this White Paper http://www.ni.com/white-paper/12402/en/; the datasocket uses TCP port 3015 (for DSTP) and it should be opened in the firewall of both server and client.

If this is already so, then, I would try to use an example of LabVIEW. Are you using an example as Simple DataSocket.lvproj that is in the LabVIEW example finder

---

But the application works when run in LabVIEW. It's only the executable of the application that does not work.

On the remote computer, it's a shared variable. So he's trying to read a shared variable (OPC) with datasocket. It seems to be the DCOM interface of the remote computer blocks the executable, but not LabVIEW.

[Pataclaque]

Yes, this is currently the situation I have.  To make it clear, prior the re-installation of Windows LabVIEW and the executable was working fine.

[wiebe@CARYA]

If you have time, try a simple VI that access the shared variable as:

shared variable,

with Open shared Variable funciton,

and datasocket.

When it works, try to make an executable. I'm guessing the Open Shared Variable gives a lot less problems then the OpenDatasocket.

I'm off now, good luck.

[Pataclaque]

Ok, I will try that.

Thanks,

Michel

[Pataclaque · Accepted solution]

Hello everyone,

I checked back my antivirus "Norton 360" on computer B, which has always run perfectly, by launching it from the tray icon.  I had an error related to Norton software, so I decided to uninstall completely from the computer B.  Guest what, everything is now running as before.

Thanks,

Michel

[eaguero]

Those are great news Patacle!

[İTACENGINEER]

Hi,

I have a problem about DataSocket Read Function . I want to read some data from OPC server. I read data and its value 100  as seen in picture dOPCexplorer . But when I give a start Labview .exe as seen Santral Veri Kayıt.vi, I get error 42 about DataSocket Read. Can anyone help me when solving this problem?