I am trying to connect to an OPC server on a remote computer on our local network using LabView with the DSC Module. An OPC client was supplied from the same vendor as the server and using that on my local computer everything seems to work as expected. In LabView, I create an OPC client using the I/O server, but when I try to connect to the remote computer I get the following error:
Unable to browse OPC Server from the selected machine.
Error -2147024891 occurred at GetOPCServerList.vi
Possible reason(s):
LabVIEW: (Hex 0x80070005) Access denied.”
I found some posts in the forum about this issue, but they didn’t help me.
What I find strange is that although I can’t see or connect to the tags/variables through the I/O server using shared variable, I can connect to them using DataSocket. I would however prefer to use shared variables as this is the recommended way when there are over 30 variables. Does anyone have any ideas why it doesn’t work with shared variables?
This is what I have tried:
- Firewalls are off
- Changed DCOM settings according to the server vendor’s specification.
- Checked that OpcEnum services are running on both server and client computer
- Computers are running on the same workgroup
- Changed remote access to the registry according to: http://digital.ni.com/public.nsf/allkb/5C8A90CD57B279F286256C2C006F1EB4
- I have also checked out these links:
https://www.ni.com/docs/en-US/bundle/labview-datalogging-and-supervisory-control-module/page/lvdsche...
https://www.ni.com/docs/en-US/bundle/labview-datalogging-and-supervisory-control-module/page/lvdscco...
