Universal DTM Manager for Fieldbus Device Integration
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Solution Overview
Problem
The existing integration of field devices into superordinated control units in automation technology requires significant installation effort due to the need for multiple device descriptions and drivers for different fieldbus systems, leading to a cumbersome and time-consuming process for servicing and configuration.
Innovation Solution
A communication hardware device with a memory element and a frame application is provided, allowing for rapid installation and updating of device objects via a USB device or internet connection, enabling seamless integration and servicing of field devices across various protocols and software environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple device descriptions and drivers are installed for different fieldbus systems, then field devices can be integrated into various protocols, but installation effort and time increase significantly
Solution Approach 1:
The patent implements a universal DTM manager that can handle multiple fieldbus protocols (Profibus, Foundation Fieldbus, HART) through a single integrated software component. This DTM manager serves as a multi-functional interface that translates between different protocol requirements and the control system, eliminating the need for separate device descriptions for each protocol and enabling one device object to work across multiple fieldbus systems.
Solution Approach 2:
The patent introduces a DTM library as an intermediary layer between the control unit and field devices. This library contains standardized device objects that act as mediators, translating protocol-specific communications into a unified interface that the control system can understand. The DTM manager coordinates the installation and configuration of these intermediary device objects, reducing the complexity of direct protocol integration.
2Adaptability or versatility
If comprehensive device descriptions are provided for all fieldbus systems, then complete field device servicing is achieved, but device complexity increases
Solution Approach 1:
The patent segments the device description functionality into modular DTM (Device Type Manager) components organized in a hierarchical library structure. Each DTM represents a specific field device type or protocol handler as an independent, reusable module. This segmentation allows the system to load only the necessary device objects for each specific application rather than maintaining all possible device descriptions simultaneously, reducing the effective complexity while preserving comprehensive coverage.
Solution Approach 2:
The patent implements a nested library structure where DTM objects are organized in hierarchical groups and subgroups within the DTM library. General device types can contain specialized sub-types, and protocol-specific DTMs can be nested within protocol handler objects. This nesting allows for systematic organization of comprehensive device coverage while providing a streamlined interface at each hierarchical level.
Data Source
AI summary
An apparatus for integrating device objects into a superordinated control unit for field devices in automation technology. A predetermined operating system runs on the control unit, and the control unit communicates via a fieldbus with the field devices. A communication hardware is provided, having a first communication link for connecting to the control unit and a second communication link for connecting to the fieldbus. Associated with the communication hardware is a memory element. The communication hardware is so embodied, that, upon coupling of the communication hardware to the control unit via the first communication link, the frame application is started via the operating system of the control unit and the driver for the communication hardware is installed, so that operating personnel can, via the device objects stored in the memory element and the fieldbus, service the associated field devices.