Overview - IEC TR 62453-41:2016 (FDT Common Object Model)
IEC TR 62453-41:2016 is a technical report in the FDT (Field Device Tool) interface specification family. It defines how the common FDT object model is implemented using Microsoft COM technology, describing object behavior and interaction via COM interfaces. This second edition (2016) updates the 2009 edition and corrects aspects such as bus master configuration, propagation of changes, and DTM services for online operation. The report specifies the technology-specific implementation of protocol-specific functionality and communication services for Device Type Managers (DTMs), Frame Applications and channels.
Key topics and technical requirements
- COM-based object model: Implementation guidance for translating the abstract FDT object model into Microsoft COM interfaces and ActiveX controls.
- DTM and FA roles: Behavior and interfaces for Device Type Managers (DTMs), Frame Applications (FAs), BTMs and channel objects.
- Communication services: Technology-specific rules for peer-to-peer and system connections, nested communication, and channel access.
- Data interchange and persistence: Parameter interchange via XML, persistence and synchronization of DTM data, and rules for DTM state management.
- Topology & scanning: Sequence charts and procedures for topology scan, network discovery, and vendor‑specific identification.
- Event and service interfaces: Definitions for FDT events, online diagnosis, parameter access, and ActiveX interface conventions.
- Corrections & best practices: Clarifications on bus master configuration, change propagation, and online DTM operations to improve interoperability and reliability.
Practical applications and users
Who uses IEC TR 62453-41:
- DTM developers and device vendors implementing COM/ActiveX DTMs to ensure FDT compatibility.
- Automation and control system integrators who embed Frame Applications or need predictable device behavior and topology handling.
- Channel and gateway vendors implementing protocol-specific communication services.
- System architects and QA teams validating DTM persistence, synchronization and online operation behavior.
Common uses:
- Implementing COM-based FDT solutions to integrate field devices into DCS/SCADA/HART/Fieldbus/PROFIBUS environments.
- Ensuring consistent device configuration, diagnostics, and online parameter access across heterogeneous automation systems.
- Developing interoperable user interfaces and ActiveX controls for device management.
Related standards
- IEC 62453 series (FDT interface specification) - other parts define the abstract object model, profiles and protocol mappings.
- Microsoft COM / ActiveX technology (implementation platform referenced by the report).
Keywords: IEC TR 62453-41, FDT, Field Device Tool, Common object model, Microsoft COM, DTM, Frame Application, device integration, communication services, ActiveX.