Read alarm properties and active alarm state from outside WinCC OA

[gveijk@actemium.nl]

Hello,

As a WinCC OA newcomer we have the challenge to do alarm messaging (to users in the field) not using the CommCente. Instead an external Microsoft .Net Windows service is to be used with extended logic. What is the recommended method to read the properties of all alarm definitions, user definitions and the active alarm list from outside the WinCC OA application via this service? Preferably event-based so we do not have to poll frequently.

Hope somebody can help me with this!

Kind regards,

[Gertjan van Schijndel]

This is possible with the OPC UA server (or the older OPC A&E server). I think your colleagues in Amersfoort have some experience with connecting a 3rd party alarm messaging system thru OPC.

[jeroen.vanos]

Would it not be easier to add the WCCOAcom.dll to the .NET solution? With this you will be able to connect to the WinCC OA database an create events based on changes in the DB.
What would be the advantages of using the OPC A&E server?

The best contacts in Amersfoort for you would be:

OPC A&E: Luciano Marinelli
WCCOAcom.dll: Freek van Zee (me, i'm using Jeroens ETM account).