ATSCADA Architecture: A Complete Guide to SCADA System Design

What Is ATSCADA Architecture?

ATSCADA Architecture is a modular SCADA system design that connects industrial devices, communication drivers, and application components into a unified platform.

To better understand the foundation of this system, you can explore SCADA software platform overview which explains core features such as real-time monitoring, alarm management, and multi-protocol communication.

At the center of this architecture is iDriver, which acts as the core data exchange engine between SCADA applications and industrial communication systems.

Unlike traditional SCADA models, ATSCADA architecture is built around a driver-based and plugin-oriented structure, enabling flexible integration and scalability.

Key Components in ATSCADA Architecture

Based on the system diagram, ATSCADA architecture consists of four main blocks:

ATSCADA Applications Layer

This is the top layer where all SCADA functionalities operate.

It includes multiple modules:

• Historical Components
  • iDataLogger
  • iHistoricalTrend
• Graphic Components
  • iGraphic
  • iRealtimeTrend
• SCADA Advanced Programming
  • VB.NET / C# scripting
• Alarm Components
  • iAlarmLogger
  • iSMS
• Authentication Components
  • iLogin
  • iUpdateUserAccount
• Realtime Components
  • iTextBox
  • iStatus

The alarm system in ATSCADA architecture is powered by modules such as iAlarmLogger and iSMS, which are part of the ATSCADA Alarm Tools used for real-time event notification and logging.

iDriver – Core of ATSCADA Architecture

This is the most important part of the system.

iDriver acts as:

• Data communication engine
• Protocol abstraction layer
• Central data dispatcher

What iDriver does:

• Collects data from driver servers
• Standardizes data format
• Distributes data to SCADA components
• Handles real-time and historical data requests

Driver & Plugin Layer (ATDriver + OPC)

Below iDriver is a flexible plugin-based system:

ATDriver Client

• Connects to ATDriver Servers (I/O Driver Servers)
• Supports industrial protocols:
  • Modbus RTU
  • Modbus TCP/IP
  • PPI
  • MPI
  • PROFINET

OPC Client

• Connects to OPC Servers
• Enables integration with third-party systems

Industrial Communication Layer

This is where real devices exist.

Includes:

• PLC systems
• Industrial controllers
• Field devices

Connected through:

• ATDriver Servers
• OPC Servers

 Communication runs over:

• Local network
• LAN
• Internet

Data Layer (Database & External Systems)

ATSCADA also integrates with external systems:

• MySQL Database
  • Stores historical data
  • Supports reporting (Excel, third-party apps)
• Tag System
  • Tag Builder → Tag File (serialized data structure)

Data Flow in ATSCADA Architecture

The diagram shows a clear data pipeline:

• Field devices send data → ATDriver Servers / OPC Servers
• Data is transferred via ATDriver Client / OPC Client
• iDriver receives and processes data
• Data is distributed to SCADA components
• Data is stored in MySQL database
• External applications can access reports

Why iDriver Makes ATSCADA Architecture Different

Centralized Data Handling

All SCADA modules use a single data source → iDriver

Plugin-Based Expansion

New protocols can be added via plugins without changing core system

Protocol Abstraction

Applications don’t need to know Modbus, OPC, etc.

Scalable Design

Easily expand from small systems to enterprise-level deployments

Conclusion

ATSCADA Architecture is designed around a powerful central component—iDriver—which connects SCADA applications, driver systems, and industrial devices into a unified data ecosystem.

By combining:

• Modular application components
• Plugin-based drivers
• Centralized data processing

ATSCADA delivers a scalable, flexible, and modern SCADA architecture suitable for complex industrial environments.

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