DCOM Settings for FactoryTalk View SE

1. Why Adjust DCOM Configuration for FTView SE Integration

SeQent’s native integration with Rockwell Automation’s FactoryTalk View SE may require DCOM accommodations, because FactoryTalk Services Platform requires them for alarm dataflow with Network Directories.

The recommendations below are based on Rockwell Automation documentation.

2. Setting Up the Windows Local Group

The Distributed COM Users group should exist in Windows by default, but may need to be created manually.

1. Open Computer Management. Search for it from the Windows Start menu or Windows Search, or find it in Control Panel under Administrative Tools > Computer Management.
2. In the tree view, expand Local Users and Groups and select the Groups node.
3. Locate the Distributed COM Users group and double-click it. If it does not exist, create it.
4. Select Add (bottom left) and add the following users:
   • Anonymous Logon
   • Authenticated Users
   • Everyone
   • Network

Note: A reboot should not be required when adding or changing members of the Distributed COM Users group.

3. DCOM Configuration

With the users added, ensure the appropriate DCOM settings are in place.

1. Open Component Services. From the Windows Start menu or Windows Search, either run DCOMcnfg or search for Component Services.
2. In the tree view, expand Component Services > Computers and select the My Computer node.
3. Right-click My Computer and select Properties.
4. On the Default Properties tab, ensure the following settings are in place:

5. On the COM Security tab, open each of the following in turn:
   • Access Permissions > Edit Limits…
   • Access Permissions > Edit Defaults…
   • Launch and Activation Permissions > Edit Limits…
   • Launch and Activation Permissions > Edit Defaults…

In each one, locate the Distributed COM Users group in the list of groups and users and set all permissions to Allow, then press OK. If Distributed COM Users is not listed, use Add… to add it.

6. Click Apply or OK to finalize all settings changes.
7. Reboot to ensure the changes take effect.

4. Other Scenarios that May Require DCOM Settings

Aside from FactoryTalk View SE integration, the same DCOM settings may be required for:

• Connection to a remote OPC Classic (DA/HDA) server.