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4.9.2 Well Known Roles

The NodeIds for the well-known Roles are defined in OPC 10000-6. All Servers should support the well-known Roles which are defined in Table 2.

Table 2 – Well-Known Roles

BrowseName

Suggested Permissions

Anonymous

The Role is allowed to browse and read non-security related Nodes only in the Server Object and all type Nodes.

AuthenticatedUser

The Role is allowed to browse and read non-security related Nodes.

TrustedApplication

The Role is allowed to browse and read non-security related Nodes.

Observer

The Role is allowed to browse, read live data, read historical data/events or subscribe to data/events.

Operator

The Role is allowed to browse, read live data, read historical data/events or subscribe to data/events.

In addition, the Session is allowed to write some live data and call some Methods.

Engineer

The Role is allowed to browse, read/write configuration data, read historical data/events, call Methods or subscribe to data/events.

Supervisor

The Role is allowed to browse, read live data, read historical data/events, call Methods or subscribe to data/events.

ConfigureAdmin

The Role is allowed to change the non-security related configuration settings.

SecurityAdmin

The Role is allowed to change security related settings.

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