Web Alarm Monitoring for HMI and SCADA Systems

View real-time and historical HMI alarms and SCADA alarm data from any device using your web browser. With Open Automation Software (OAS), developers can build interactive SCADA alarm notification tools using standard technologies such as HTML5, CSS, and JavaScript. It's a flexible way to manage IIoT web-based alarms directly in your existing or new web apps.

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Add Real Time and Historical Alarms to Your Web Apps

OAS Web Alarm integrates with existing web applications as well as new applications built on any number of front-end frameworks. You can build it with simple HTML and JavaScript, or utilize a front end web development platform. Web Alarm displays real time and historical alarm data in an interactive or animated graphical format on any device with a web browser.

Key Features & Benefits

Browser Compatibility

Web Alarm runs in all modern browsers, including Chrome, Safari, Edge, and Firefox, on any device, such as a PC, Mac, Android, or iOS. Since it’s built with HTML, JavaScript, and CSS, you can view and manage web HMI alarm data with no additional installation or plugins required.

Use with Existing Frameworks

Because Web Alarm uses standard HTML and JavaScript, you can integrate it within your own custom application or add behaviors to another framework like ASP.NET, Ruby on Rails, PHP, Angular, React, and VueJS.

Security

All client-to-server communications can be locked down using SSL. Simply enable SSL in the OAS server, and data is encrypted over the wire between the browser and OAS.

Direct Data Delivery

All OAS data is directly sent and received between the client and the OAS server, which eliminates the need to implement server-side handling and removes load from your web application server.

Using Web Alarm


Configuration Syntax

Within your web application code, you can define the configuration of the Web Alarm data feed, including how to filter Alarms, display options, and more. Use JavaScript events to create a tailored user experience for interacting with HMI alarms and SCADA alarm notifications.

Web Alarm Configuration Syntax

Looking for a No-Code Solution?

Use the OAS Open UIEngine to build responsive alarm interfaces with zero coding. This no-code tool includes an intuitive drag-and-drop interface and a built-in Alarm Component that makes it easy to display both real-time and historical web HMI alarm data. It’s perfect for teams that want to move fast without custom development.

Learn more about OAS Open UIEngine

UIEngine Alarm Component

Common Questions

What skills are necessary to use Web Alarm?

Basic knowledge of HTML and JavaScript is all you need. Developers can easily add HMI alarm and SCADA alarm notification capabilities to most front-end platforms.

Can the Web Alarm appearance be customized?

Yes, you can configure the color scheme using CSS and set filters for alarm data based on priority, alarm state, alarm type, and more.

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OAS Platform Features

Cross-Platform Support

The OAS Platform supports multiple operating systems and deployment options, including Windows, Linux, Docker Containers, and can even run on low-footprint devices such as a Raspberry PI 4.

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Networking

OAS is an edge solution that offers flexible networking options for standalone installations, multi-tenant data aggregation, and even secure unidirectional data transport. This makes it ideal for IIoT web-based alarms and distributed systems.

Learn more about OAS Networking Features

Programmatic Setup

Utilize our .NET SDK or REST API for flexible and automated setup, ensuring full integration with your asset management software. You can also import and export CSV files, which helps you work with Excel and third-party applications.

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Calculations, Time On, Counts, and Totals

Run real-time calculations, track time on/off values, and monitor event frequency. It’s a great fit for aggregating and analyzing SCADA alarm data across systems.

Learn more about OAS Calculations

See How We Compare

The initial cost of OAS is far less than our competitors – but the savings don’t stop there. We work with OEMS and System Integrators to provide perpetual licenses with quantity discounts with flexible tag pricing and unlimited client connections.

Network Feature
OAS IoT DNA
Typical Cloud
Accurate Live Data
Unlimited Data Usage / No Fees
Data Resolution of 100 Nanoseconds
High Speed Throughput < 50 ms
No Data Loss on Network Failure

No Question Left Unanswered

We make getting started with OAS easy - Browse our extensive Knowledge Base of articles on Getting Started as well as How To content that takes you step-by-step through building a solution, and finally learn more about specific features and configurations.

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