3. How to set the environments for connecting OPC
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<2> Select the “Default Properties” tab in the “My
Computer Properties” window and make the
following settings.
Table 3.2 Default properties
Enable Distributed COM on this computer Check this item
Enable COM Internet service on this computer Not check this item
Default Authentication Level Connect
Default Impersonation Level Identify
When there is difference between authentication level of OPC client-side and one of OPC server side,
It is accorded with high one. In addition, the authentication level is a turn of "the None < connection <
<3> Click “COM Security” tab and click < Edit
Limits… > in “Access Permissions”.