Product category:
Fieldbus systems, Fibre-optic systems
News Release from: The Profibus Group | Subject: TCI Specification
Edited by the Processingtalk Editorial
Team on 05 January 2007
Tool Calling Interface TCI specification
completed
Profibus and Profinet International (PI) have completed the TCI specification: this is manufacturer-independent and allows dynamic parameters to be loaded to Profibus and Profinet devices
Profibus and Profinet International (PI) has completed the TCI (Tool Calling Interface) specification after less than a year of development work TCI is manufacturer-independent and allows dynamic parameters to be loaded to Profibus and Profinet devices without having to exit the automation-system engineering tool
This article was originally published on Processingtalk on 12 Apr 2007 at 8.00am (UK)
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This makes it much quicker and easier for users to configure their systems and machines.
Intelligent field devices, which preprocess system data or take over defined partial functionalities (e.g laser scanners), usually require system-specific parameters in order to work in the best possible way in a particular environment.
Previously, it was not possible to create and load these dynamic parameters directly with the automation-system engineering tool, meaning that engineers have to use an additional, manufacturer-specific device engineering tool for each device type.
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With an aim to improve the total cost of ownership of machines and plants, manufacturers and operators are continually on the look-out for optimisation potential.
With TCI, PI has developed a concept that defines a calling interface for the device engineering tool and the automation-system engineering tool, thus supporting and standardising communication with field devices over network boundaries.
From the user point of view, integrating TCI is as simple as installing a printer on a PC.
The manufacturer of an intelligent field device simply has to supply an installation programme for the device engineering tool, a functional description in the form of an XML file and the device engineering tool itself.
TCI functionality provides: A non-manufacturer-specific, uniform calling interface for all device engineering tools and automation-system engineering tools; Simple configuration; Parameterisation/diagnostics over network boundaries; Centralised or distributed data storage; Simple reloading of set parameters when a device is replaced.
The manufacturer of an intelligent field device defines the functionality of the device engineering tool in an XML file.
The tool can be configured in such a way that it can be used for several different field devices.
The communication interface integrated in the engineering tool does not require the system engineer to have any specific communication knowledge.
The engineer can establish communication with the device and parameterise and diagnose Profibus/Profinet devices without any additional effort.
An associated feature is a standardised storage path within an automation project.
This common data storage enables all parameters and programmes stored during system engineering to be archived and/or reloaded.
The TCI specification has been developed in close collaboration with AIDA (Automatisierungsinitiative Deutscher Automobilhersteller - Automation Initiative of German Automobile Manufacturers).
All the requirements of this important group of users were agreed with PI experts and included in the specification.
AIDA also expressed its desire that the TCI be introduced quickly and consistently.
The functionality of TCI was demonstrated at the PNO stand at the SPS/IPC/DRIVES 2006 by means of the STEP7 engineering tool and various device engineering tools.
The TCI specification is freely available and can be downloaded (free of charge for PI members) from the Profibus website.
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