Product specifications

Integrating OPC Servers into 800xA
3BDS011222-510 B 457
provider. There you can see connectivity status and if there is a warning or an
error there is a problem description in the ‘Description’ column.
2. In the Control Structure browse to the network object of the connected OPC
AE server. Insert an ‘Alarm and Event List’ aspect. This list will show all
alarms and events generated by the connected OPC AE Server.
Integrating OPC HDA Servers
Integration of OPC HDA servers is not a supported function of 800xA.
DCOM Security Settings for OPC
General DCOM Settings
The recommended configuration is to have all computers involved in remote
OPC Access in the same domain. If this is not possible, it is however possible to
configure DCOM security to allow OPC Access anyway. Regardless of the
configuration some DCOM security settings are however necessary.
This section describes how to configure the DCOM settings in Windows 7 and
Windows Server 2008. The settings can however be used with slight adaptations in
other Windows versions.
DCOM security settings are made with the DCOM configuration tool, dcomcnfg.
A general recommendation is to use accounts with passwords that never expires,
otherwise you will need to change DCOM security settings every time the password
is changed.
The DCOM setting Default Properties for the non-system computers must be set
to:
Default Authentication Level = Connect
Default Impersonation Level = Identify
A remote OPC Server must use Authentication Level = Default.
Settings on Windows 7.
1. Go to the COM Security tab and note these are the four permission
configurations that we will have to edit: