Authorization Check Plug-in Wizard

Lists

On the "List" tab you can grant or deny manager access by using white and black lists.

The "List" tab comprises the two areas: "Manager view" as well as "Whitelist/Blacklist".

Manager View

In the manager view you can see via the number of entries which limitations/permissions were added for the single managers of the manager view.

The manager view shows the total number of rights that were configured.

Whitelist/Blacklist

In order to add an entry (host name and arguments) to the white or blacklist of the manager, select a manager from the manager view (Step1) and enter the host name and permitted options for the manager (Step 2). Click on the „+“ button to add the manager. To change an existing manager, click on the button (Step 3).

Hostname

Enter here the host name of the client on which the WinCC OA managers have access (whitelist) or do not have access (blacklist). If a host name exists in both lists, the blacklist is used. Also the wildcard * (asterisk) can be used for all clients of a WinCC OA system. For each host select a manager from the manager view (Step 1). The authorization check plug-in is checked by using the combination of host name, manager and manager argument.

The white and black lists with the manager arguments are checked before the server (Data/Event manager) accepts the connection request by the client (manager on a specific host).

Arguments

Enter here the arguments for the specific manager. The arguments are permitted or denied when a manager is started. Manager options are checked before the server accepts the connection request of a client to the server. You can enter the manager options for single managers as arguments.

For white and black lists the specified arguments including the order of the arguments is checked.

If, e.g. the arguments "-num 4 -m para" are specified in the whitelist, the user interface cannot be started with the arguments "-m para -num 4".

You can find a detailed description of the manager options in the chapter Manager options, basics as well as in the advanced chapters such as WCCOAui.

In the figure below on the client "ATPC10FA" a user interface may only start the module GEDI but not the module PARA.

Deletes a single manager (row) from the whitelist/blacklist table after selecting it

Deletes all managers from the whitelist/blacklist table.

Views

Views

The authorization check plug-in is based on the settings that are saved in the plant model of a plant. Before using the authorization check plug-in, a plant model must be created and entered into the plant model editor.

To illustrate this, a simple model is used in the further examples.

The view "Windpark1" contains the nodes Turbine1 and Turbine2 and the both turbines again the node "Speed".

A view must be created in the plant model editor, This view is then shown in the plug-in.

On the "Views" tab you can see the plant model specific views. Rights are assigned for every view. A user must possess the rights. Data point rights are assigned to a role and the role to a view. In so doing you specify how a user can display and read data points as well as write on them.

The "Views" tab comprises the following areas: Views, Role, Required authorization levels, Access right, Permissions as well as Global settings.

Select the view from the views (step 1). and assign a role to the view (step 2). Set the authorization bits that enable the access as well as the access right for view and role (step 3). Save the configuration for the view (Step 4).

Authorization

Next to node name also the permission for the node is shown - see description of the permission.

Roles

Create roles via the "..." column and the "New role" option. .

In the figure above, the role "SCADA_Dev" was assigned to the view "Windpark1". The role "SCADA_Dev" has write rights for the data points: "windpark1_SCADA_Dev:turbine1.geschwindigkeit" and "windpark1_SCADA_DEV:turbine2.geschwindigkeit". The data point rights are assigned to a role.

When e.g. a node name is changed in the plant model editor, a message is shown in the authorization check plug-in Wizard.

With this button you can check roles for errors and then change them. All entries in Authorization Check Plug-in Wizard are checked for inconsistent changes:

• Plant model views: a node was deleted or a new node was added.

• A data point connection was changed.

• That a node was renamed is shown as an error "Node was deleted and a new was created".

Required authorization level

The authorization levels in views are set via bit patterns of user bits for a view. For a detailed description of the bits, see chapter authorization levels. Set the user bits for a view. The user bits are then also valid for the nodes of a view. The view must be selected in order to set the bits. Possible values in the bit mask are 1, 0, or X. With 1 the bit is set (the user must have the authorization bit) and with 0 the bit is deleted (the user may not have the bit). X means that the bit is not checked (Don’t Care).

The authorization levels set here are compared with the authorization levels of a user group. If a group and via the group a user possesses the same WinCC OA bit pattern as the view, the user has the access right to the data points. The example demonstrates the use of the authorization levels (user bits).

This bit was assigned to a view via the wizard:

User Andreas has in WinCC OA the bits:

User Hanna has in WinCC OA the bits:

User Max has in WinCC OA the bits:

The users Andreas and Max possess the same bit pattern as the view but the user Hanna does not possess it. This means that the user Andreas and Max have the access to this view and for the nodes and data points of the view.

Set required authorization level (Bits) for the view

The role "Operator_Windpark" has the user bit 8.

Access right

• Adopt of node above - the access right is adopted from the node above. CAUTION: if there is no "parent" node, no authorization is set (the authorization is "deleted").

• Adopt only for this node - the access right specified here is only valid for this node

• Use for this node and sub node - the access right specified here is valid for this node and all sub nodes

• Block: the data points are not shown to the user

• Read: defines whether a node is readable

• Write: defines whether the node is writable

Different access rights can be set for the same data point e.g. once read access and once write access. This way different access rights can be assigned to the same data point via different nodes of a view. When different access rights are defined, all rights are checked. The higher right has priority.

If, for example, the data point "speed" was assigned to node "Turbine1" with read access and to node "Turbine2" with write access, the higher access right "Write" has priority (Processing order 2).

Permissions

Under "Permissions" all nodes and data points of the view are shown after clicking the view. In the "Permission" column the access right for this data point is shown - see desciption of the access right.

Global settings

CNS Key

Under this key all rights of the authorization check plug-in are saved. Example: the key „OA:ACP“ was configured. The authorization information is saved under this key. The key may only be specified once. The default value is OA:ACP.

Default permission

In the column default permission the default permission is set for all data points. The default permission is valid for all DPE that are not assigned to a plant model node on the "Views" tab and are not included in the public data point list (on the DPE tab).

DPE

On the "DPE" tab global rights for data points for managers can be set. These rights are valid for the whole WinCC OA Project irrespective of the user.

The DPE tab comprises the following areas: Manager view, Datapointtype/Datapointelement, Access right, Permissions and DP View/DP Preview.

Select a manager from the manager view (Step 1). Add a data point via Drag & Drop in to the field "Datapointelement" or the data point type in the field of the same name (steps 2 and 3). You can also drag a data point via drag&drop into the table (see figure below). Set the access right for the data points (step 4) and save the configuration (step 5). You can find the descriptions of the single fields further below.

Manager View

Select a manager from the manager view. The access rights are set for the selected manager.

Data point type/ Data point element

You can configure the access to specific data points via the field "data point type" or "data point element". Thereby the wildcard * can be used for data point elements.

Access right

The following access rights can be set for the managers globally. The rights are valid for the whole project irrespective of the user.

• • Block: the data points are not shown to the user

  • Read: defines whether a node is readable

  • Write: defines whether the node is writable

Add system-relevant DPE

Adds the data point elements that are relevant for the operation of WinCC OA, to the "Permissions" table below.

Permissions

Under permissions the configured data point types and data points as well as the access right (block, read, write) are shown.

DP View/ Preview

From the DP view you can select data point types and data points via Drag&Drop.

DP preview

The button shows which data points are selected by using wildcards. The figure below demonstrates the data point preview. Select the data point types and data points via Drag & Drop (Step 1) and view the data points via the button (step 2).

The data point on the selected row is shown via the button. When you use the asterisk (*) for the datapointelement field, all data point elements of the specific data point type are shown (not only the data point elements that were selected via drag&drop but all data point elements of the specific type).