Modifying DCOM Settings on Windows (XP, Vista, 07, Server 2008)

About this task

You must change the OPC HDA server settings so remote users can access the OPC HDA server as an OPC Data Access Server.

The following procedures detail the OPC HDA server-specific COM/DCOM settings on Windows 7, Windows XP, Windows Vista, and Windows Server 2008 operating systems.

Procedure

  1. Access the DCOM configurator (dcomcnfg.exe).
    The Component Services dialog box appears.
  2. Expand Component Services > Computers > My Computer.
  3. Select the DCOM Config object.
    A list of applications displays.
  4. Right-click the Proficy Historian HDA server 3.5 and choose Properties.
    The Historian HDA server 3.5 Properties dialog box appears.
  5. Click the General tab.
    The Authentication Level should be set to ?Default, if it is not already. This uses the default authentication rules that are set in the system-wide DCOM settings.
  6. Click the Location tab and make sure that the "Run Application on this computer" check box is selected.
  7. Click the Security tab and select the Customize option for each of the permissions in this dialog box and edit them as described in the following steps.
  8. In the Launch and Activation Permissions area, click Edit.
    The Launch Permission dialog box appears for Windows XP, or the Launch and Activation Permission dialog box appears for Windows Vista.
  9. Click the Add button.
    The Select Users or Groups dialog box appears.
  10. Click the Advanced Button.
    Another Select Users or Groups dialog box appears.
  11. Click the Find Now button, then in the search results, select the OPC group and click OK.
    The Select Users or Groups dialog box displays the OPC group.
  12. Click OK to return to the Launch Permission dialog box.
    The OPC group is displayed in the Group or user names list.
  13. Select the OPC group and then select the Allow check boxes for Local Launch, Remote Launch, Local Activation, and Remote Activation permissions.
  14. Click OK to return to the Historian HDA server 3.5 Properties dialog box.
  15. In the Access Permissions area, click Edit.
    The Access Permission dialog box appears.
  16. Click the Add button.
    The Select Users or Groups dialog box appears.
  17. Click the Advanced Button.
    Another Select Users or Groups dialog box appears.
  18. Click the Find Now button, then in the search results, select the OPC group and click OK.
    The Select Users or Groups dialog box displays the OPC group.
  19. Click OK to return to the Access Permission dialog box.
    The OPC group is displayed in the Group or user names list.
  20. Select the OPC group and then select the Allow check boxes for Local Access and Remote Access permissions.
  21. Click OK to return to the Historian HDA server 3.5 Properties dialog box.
  22. In the Configuration Permissions area, click Edit.
    The Change Configuration Permission dialog box appears.
  23. Click the Add button.
    The Select Users or Groups dialog box appears.
  24. Click the Advanced Button.
    Another Select Users or Groups dialog box appears.
  25. Click the Find Now button, then in the search results, select the OPC group and click OK.
    The Select Users or Groups dialog box displays the OPC group.
  26. Click OK to return to the Change Configuration Permission dialog box.
    The OPC group is displayed in the Group or user names list.
  27. Select the OPC group and then select the Allow check boxes for Full Control and Read permissions.
  28. Click OK to return to the Historian HDA server 3.5 Properties dialog box.
  29. Click OK.
  30. Repeat steps 2 through 29 for each OPC server you need to access remotely.
  31. When you are done, close the Component Services dialog box.