OPC Web Alarm.NET

The OPC Web Alarm.NET product provides the features of viewing real-time and historical alarms on unlimited local and remote web applications, alarm logging, alarm notification, and alarm statistics.  This product includes the windows services to monitor alarm limits, an ASP.NET component to be used on local and remote systems to connect to the local windows service.

OPC Web Alarm.NET provides real-time and historical alarm viewing through a 100% managed ASP.NET component that implements AJAX for real-time update without a page refresh.

All components are native ASP.NET components providing real-time update and data control using AJAX technology for real-time update without the need to refresh an entire page.

Develop ASP.NET applications for HMI systems for unlimited browser interface.  Simply define the properties you desire to control from real-time data from any licensed local or remote OPC Systems Service.

For step by step instructions review the following sections in the Quick Start Example topic.

Refer to Tag Configuration for setting the alarm limits for tags.

Web Alarming for how to add an alarm window to a Web application.

Configure Alarm Logging to setup alarm logging.

Configure Alarm Notification to setup sending alarms via e-mail and keeping track of alarm statistics.


Define alarm limits.


Alarm Window in Web application.


Detailed step by step instructions on implementing alarm window in web application.


Log alarms.


Send e-mail alarms.


OPC Web Alarm Control

View the following section for description of the OPC Web Alarm .NET control.



OPC Web Alarm.NET Component

OPC Web Alarm.NET Properties

Add OPC Web Alarm Component to Visual Studio.NET

Special consideration for all WebForms using OPC Web Alarm.NET for real-time update.

ASP.NET registration for IIS

Deployment of OPC Web Alarm.NET ASP.NET application

OPC Web Refresh