Smar System302 - What is a device description?


	Asset Management Interface - 3/2/2011
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	Discrete I/O in FF architecture using SYSTEM302 - 3/2/2011
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	High Level application with SYSTEM302 - 3/2/2011
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	Intelligent MCC with DFI302 - 3/2/2011
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	PLC (Programmable Logic Controller) - 3/2/2011
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	Protocol Gateway - 3/2/2011
	(pdf - 566 KB)

	SCADA Solution for Wide Area Plants - 3/2/2011
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	SYSTEM302 - Redundancy and Availability (English) - 11/3/2010
	(pdf - 759 KB)

	SYSTEM302 as DCS and integration with High Level Software Tools - 3/2/2011
	(pdf - 605 KB)

Application Notes


	Sixteen years of fieldbus technology application in petrochemical plants and a whole new outlook for production challenges. - 5/5/2011
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	SYSTEM302 Improves Safety and Availability of Chemical Additives Plant - 11/3/2010
	(pdf - 963 KB)

Catalogs


	SYSTEM302 - Architecture (English) - 6/29/2011
	(pdf - 1.34 MB)

	SYSTEM302 - Architecture (Español) - 6/29/2011
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	SYSTEM302 - Architecture (Portuguese) - 6/29/2011
	(pdf - 1.28 MB)

	SYSTEM302 - Catalogue (English) - 1/6/2012
	(pdf - 11.93 MB)

	SYSTEM302 - Catalogue (Portuguese) - 10/25/2011
	(pdf - 11.67 MB)

	SYSTEM302 - Catalogue (Spanish) - 11/3/2010
	(pdf - 11.98 MB)

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Fieldbus FAQ


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Manuals


	System302 - Application Bulletin - (English) - 11/3/2010
	(pdf - 6.34 MB)

	System302 - Application Bulletin - (Portuguese) - 11/3/2010
	(pdf - 5.72 MB)

	SYSTEM302 - Eletric Installation Guide (English) - 6/10/2011
	(pdf - 4.01 MB)

	System302 - Guia de Instação - 11/3/2010
	(pdf - 1.76 MB)

	System302 - Installation Guide - 11/3/2010
	(pdf - 1.74 MB)

	System302 Studio - Manual do Usuário - 1/30/2012
	(pdf - 3.03 MB)

	System302 Studio - User's Manual - 1/30/2012
	(pdf - 3.03 MB)

Other Literatures


	Fieldbus Tutorial (English) - 11/3/2010
	(pdf - 834 KB)

	SYSTEM302 - 20 Q&A (English) - 11/3/2010
	(pdf - 640 KB)

	SYSTEM302 - 20 Q&A (Portuguese) - 11/3/2010
	(pdf - 236 KB)

	SYSTEM302 - Connecting to the Future (English) - 11/3/2010
	(pdf - 642 KB)

	SYSTEM302 - Features (English) - 11/10/2011
	(pdf - 28 KB)

	SYSTEM302 - Redundancy (English) - 11/3/2010
	(pdf - 1.32 MB)

	SYSTEM302 - Redundancy (Portuguese) - 11/3/2010
	(pdf - 1.89 MB)

	Understanding Interoperability (English)

References


	El Libro de Referencias para Fieldbus (Spanish) - 11/8/2010
	(pdf - 10.33 MB)

	Fieldbus Reference Book - 11/8/2010
	(pdf - 10.95 MB)

Releases


	SYSTEM302 - XI - 11/3/2010
	(pdf - 459 KB)

Service Pack


	Service Pack 2 - SYSTEM302 Version 7.1.3 - 11/8/2010
	(1.3.zip - 51.59 MB)

	Service Pack 2 - SYSTEM302 Version 7.2.2 - 11/8/2010
	(2.2.zip - 51.12 MB)


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10 - What is a device description?

Since profiles offers choices to what capabilities and parameters are implemented in a device, a configuration device or other MMI need to know which of these a particular device implements.

The device description (DD) specifies which application area and device profile a device belongs to. For certain parameters it also specifies options are valid and more specific meanings etc. DD may also define methods, e.g. for steps a Host to follow when calibrating the device. The DD file also can describe an user group or vendor specific features on these devices.

The DD is prepared by the device manufacturer and may either be stored in the device itself or be supplied separately, e.g. on a floppy disk or CD-ROM. A MMI may using the DD completely and correctly configure a new device or new version of a device without a corresponding upgrade.