***Important notes before configuring WIN-911***
Please review the System Requirements page for supported SCADA versions and other helpful information.
*** Important OPC Notes ***
Please review the OPC Network Diagrams for recommended architecture examples.
OPC DCOM Settings
DCOM or Distributed Component Object Model is used primarily for the allowance of communication between clients and (OPC) servers with the same computer that runs the Windows OS. It allows COM components to communicate among objects on different computers. DCOM uses Remote Procedure Call (RPC) to allow COM to communicate beyond the boundaries of the local machine to a remote machine.
Out of the box, your OPC server will most likely not work or connect with WIN-911. You will need to configure DCOM for your environment so that you will have the proper permissions to access, connect, and communicate from WIN-911 to your OPC server.
The instructions on how to perform DCOM settings can be found with the following link, based on your Windows OS: DCOM Setup.
*** WIN-911 Configuration ***
In the WIN-911 Workspace, expand Alarm Sources > OPC DA > Click Add New.
Fill out the corresponding fields in WIN-911, to connect to the OPC Server.
Name: Enter a name for your OPC data source.
Machine: Select whether the OPC server installed and running on the same Local machine as WIN-911 or on a Remote machine.
Server Class: Click the ellipsis button (3 dots on far right) to browse for the server class on the selected machine. Choose the correct OPC server from the list.
Alarms are configured in WIN-911 for OPC DA data sources and WIN-911 determines when a specific alarm condition exists. This is done by clicking Add Item or Import Items.
Clicking + Add Item will present a new item configuration entry.
Enter an Item Name, the Item ID can be manually entered exactly as it exists in the OPC server, or simply browse for the item with the ellipsis button (NOT ALL OPC servers support a browse feature).
NOTE: The browse window can easily be filtered with the search field.
If your OPC server supports the browse functionality, and DCOM is configured correctly to allow it, importing items to create alarms for can be much easier and less time consuming.
Select the desired items, click the > arrow to move them to the right side and click Next.
Select an item and configure the Condition needed to consider this item "IN ALARM" in your environment.
Assign the item to the Notification Policy of your choice and click the > arrow to move the item to the right side. Repeat for all Items and click Import to finish the process for this group of Items.
And always... Save your changes!
WIN-911 can indicate its operational status by writing a periodically changing value to a specified OPC DA item. We call this function a Heartbeat because it provides a vital-sign to your Application, allowing for corrective action to be taken.
The Heartbeat takes the form of an Integer value that ramps from 1 to 9 at a write interval of your choosing. After the value reaches 9 it resets to one, and the process is repeated ad infinitum. If the tag fails to update within the specified time, you can assume that WIN-911 is in an impaired state and no longer able to receive alarm event information.
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