Frequently Asked Questions – .NET Alarm
The database engine language is different than the Regional Language settings of the Data Logging and / Alarm Logging Service. Data Logging updates, Alarm Logging updates, trend history, and / alarm history is not working due to invalid date format.
Go to Configure-Options-History and Enable History Date Format.
After updating Open Automation Software with the incremental update the project no longer compiles or the application no longer works.
Make sure to Unblock the dlls before copying to C:Program Files (x86)Open Automation SoftwareOPC Systems.NET.
To Unblock the files copy to a trusted location for your system, Desktop works well, then right click on the file and select Properties to select Unblock. Then copy from your Desktop to C:Program Files (x86)Open Automation SoftwareOPC Systems.NET.
Yes, go to Configure-OPC Alarm and Event Servers using the Configure OAS application to define each A&E OPC Server to subscribe to.
Use the GetAlarmDataTable method to return a DataTable object with all alarms and the values for each property of an alarm.
myDataTable = opcAlarmControl1.GetAlarmDataTable();
Include the following in References as Local Copy: