dl-breadcrumbs__homedl-breadcrumb-item__separatorConfiguration and programmingdl-breadcrumb-item__separatorProgramming with CODESYSdl-breadcrumb-item__separatorAutomation Builderdl-breadcrumb-item__separator...dl-breadcrumb-item__separatorReference: User Interface dl-breadcrumb-item__separatorObjects dl-breadcrumb-item__separatorObject: Device, and Generic Device Editor dl-breadcrumb-item__separatorTab: Access Rights
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Recommendations for data protection

In order to minimize the risk of data security violations, we recommend the following organizational and technical actions for the system where your applications are running. Whenever possible, avoid exposing the PLC and control networks to open networks and the Internet. Use additional data link layers for protection, such as VPN for remote access, and install firewall mechanisms. Restrict access to authorized persons only, change any existing default passwords during the initial commissioning, and change them in regular intervals.

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Detailed information on the concept and use of device user management is provided in the "Handling of Device User Management" chapter.

There you will also find the following instructions on how to use the editor:

  • First-time login to the controller for editing and viewing its user management

  • Setting up a new user in the user management of the controller

  • Changing of access rights to controller objects in the user management of the controller

  • Loading user management from a *.dum file, modifying it, and downloading it to the controller in offline mode

On this tab of the ⮫ Device Editor, you define the device access rights of device users to objects on the controller. As in the project user management, users must be members of at least one user group and only user groups can be granted certain access rights.

For more information, see: ⮫ “Handling of Device User Management ”

Requirements for the “Access Rights” tab to be displayed:

  • The “Show access rights page” option has to be selected in den CODESYS options in “Device editor” category.

    Note that this CODESYS option can be overwritten by the device description.

Requirements for the access rights to be granted to user groups

  • A component for the user management has to be available on the controller. That is the primary requirement.

  • Users and user groups have to be configured on the “Users and Groups” tab.

Table 627: Objects

In the tree structure, the objects are listed to which actions can be executed at runtime. The objects are each assigned by their object source and partially sorted in object groups. In the “Rights” view, you can configure the access options for a user group to a selected object.

Object source (root node)

  • “File system objects  Device”: In these objects, the permissions can be granted to folders of the current execution directory of the controller.

  • “Runtime objects  /”: In these objects, all objects are managed which have online access in the controller and therefore have to control the permissions.

A description of the objects is located in the Overview of the objects table.

Object groups and objects (indented)

Example: “Device” with child nodes “Logger”, “PlcLogic”, “Settings”, “UserManagement”.

Table 628: Permissions

In general, the subobjects inherit the permissions from the root object (“Device” or “/”). This means that if a permission of a user group is denied or explicitly granted to a parent object, then this first affects all child objects.

The table applies for the object that is currently selected in the tree. For every user group, it shows the rights currently configured for the possible actions on this object.

_cds_img_device_user_management_access_rights.png

Possible actions on the object:

  • “Add/Remove”

  • “Modify”

  • “View”

  • “Execute”

When an object is clicked, a table on the right side shows the access rights of the available user groups for the selected object.

This allows you to quickly see:

  • Which access rights are evaluated by an object

  • Which user group has which effective rights to which object

Meanings of the symbols

  • _cds_icon_grant.png: Access right granted explicitly

  • _cds_icon_deny.png: Access right denied explicitly

  • _cds_icon_grant_greyed.png: Access right granted through inheritance

  • _cds_icon_deny_greyed.png: Access right denied through inheritance

  • _cds_icon_clear_permission.png: The access right was not granted or denied explicitly and also not inherited by the parent object. Access is not possible.

  • No symbol: Multiple objects are selected that have different access rights.

Change the permission by clicking the symbol.

Example

The “Logger” object on the “Access Rights” tab was created by the "Logger" component and controls its access rights. It is located directly below the “Device” runtime object.

The possible access rights for this object can be granted only for the “View” action.

_cds_img_dev_access_right_ex1.png

Initially, each object has a read access. This means that every user can read the "Logger" of a controller. If this access right should be denied for a single user group (“Service” in the example), then the read access to the logger object has to be denied explicitly.

_cds_img_dev_access_right_ex2.png
  • Toolbar of the tab