This section describes how to configure the OPC
Server on Windows Server 2003.
To configure the OPC Server:
Choose Start |
Run. Type dcomcnfg and click OK.
The Component Services
dialog will appear.
In the tree pane, locate and
select Computers under Component Services.
Computer in the pane on the right, and choose Properties from the context menu.
Select the COM
Security tab, and click Edit Limits in the
Access Permissions section.
Use the Access
Permission dialog to select Anonymous
Logon, and then check Allow for the Remote Access
This is needed for OPCEnum.exe to function correctly, and for any
OPC Servers and clients that set their DCOM authentication level to
None in order to allow anonymous connections. If you don't use
OPCEnum.exe, you might not need to
enable remote access for anonymous users.
to save your changes.
You need to then edit the launch and
Limits in the Launch and Activation
Permissions section of the Default COM Security tab.
In the Group or user
names list, select Everyone then select
every check box in the Allow column.
Click OK to
save your changes.
Finally, you're ready to edit the default
permissions for Access and Launch for each user (or group) that participates in
OPC communication (for example, "OPC Users").
In the Access
Permissions section of the COM Security tab, click Edit Default. Select the necessary users/groups and
allow Local Access and Remote
Access. Click OK to save your
In the Launch
and Activation Permissions section of the COM Security tab,
click Edit Default.
Select the necessary users/groups and allow Local
Access and Remote Access. Click OK to save your changes.
You have now configured your OPC
Note: Now you need to restart this machine
so that your settings can take effect.