EN
In the field of industrial automation, ABB's Advant series and System 800xA represent two generations of typical distributed control system (DCS) architectures. From traditional control-oriented systems to integrated platforms for information and asset management, this evolution reflects not only product upgrades but also the trend of industrial systems moving from "control silos" to "digitally integrated platforms."
From Advant to 800xA: Background of Architectural Evolution
The Advant system is a typical traditional DCS architecture, centered on stable process control, and widely used in the power, chemical, and metallurgical industries. Its characteristics include high control reliability, but the systems are relatively independent; HMI, control, safety, and electrical systems are often separated, and data sharing capabilities are limited.
As the complexity of industrial systems increases, enterprises face challenges such as high maintenance costs for multiple systems, severe information silos, and a lack of a unified operating interface. Against this backdrop, ABB launched System 800xA (Extended Automation), aiming to build a unified platform that integrates control, information, and asset management.
System 800xA Architectural Features
The core change in the 800xA is not merely a controller upgrade, but a transformation of the overall architectural philosophy.
● Unified Object Model (Aspect Object)
The 800xA adopts an Aspect Object architecture, unifying the modeling of equipment, process units, and information (such as alarms, historical data, and documents), upgrading the system from "point-to-point control" to "object-based management."
● Layered Architecture
A typical 800xA architecture can be divided into four layers:
Enterprise Layer: MES / ERP / Data Analysis System
Operation Layer: Operator Station, Engineering Station, Historical Database
Control Layer: AC800M Controller, Safety System
Field Layer: S800 I/O and various fieldbuses
● Openness and Integration Capabilities
Through industry standard protocols such as OPC and IEC 61850, the 800xA can integrate with PLCs, electrical systems, SIS systems, and third-party devices to achieve cross-system collaborative control.
Key Differences Between Advant and 800xA
From an engineering perspective, the main differences lie in three aspects:
Architectural Philosophy: Advant is control-centric, while 800xA is information and asset-centric.
System Integration Capability: Advant is relatively closed, while 800xA emphasizes multi-system integration.
Scalability and Lifecycle: 800xA supports modular expansion and phased upgrades.
Therefore, 800xA is not a simple replacement for Advant, but rather provides a "gradual evolution path."
Upgrade Path from Advant to 800xA
In actual engineering projects, system replacement is usually not completed all at once, but rather a phased evolution strategy is adopted:
● Retain the control layer + add the 800xA operation layer
Without changing the original Advant control system, 800xA is introduced as a unified operation and monitoring platform to achieve a visual upgrade.
● Hybrid Architecture Transition
Advant and AC800M coexist, with the new system gradually taking over newly added process units, achieving a smooth migration.
● Full Migration
Ultimately, the controllers and I/O systems are gradually replaced to achieve a unified 800xA architecture platform.
System Selection and Decision Factors
When choosing an upgrade path, the following factors are typically considered:
- Existing system size and complexity
- Acceptable downtime
- Project budget and investment cycle
- Need for electrical and safety system integration
- Digitalization and data analysis needs
- System lifecycle planning
For most existing factories, incremental upgrades (Evolution) are usually the lowest-risk and most cost-effective solution.
Summary
The evolution from Advant to System 800xA is essentially a shift in industrial automation systems from a "control-oriented architecture" to an "information and control converged platform." For engineering practice, the key is not a one-time system replacement, but rather how to design a reasonable phased migration path to gradually achieve digital upgrades while ensuring production continuity.