Rockwell Automation 1757-FFLDC4 FOUNDATION Fieldbus System User Manual - Manual (Page 167)

Rockwell Automation Publication 1757-UM012A-EN-P - July 2011 167
Appendix
E
Device Support
This appendix describes how to add device support files both automatically, by
using the Import Device Support function, and manually.
Introduction The device description (DD) for a particular device is provided by the
manufacturer and distributed by Fieldbus Foundation. There is a DD for each
device type, and it consists of the files whose extensions are .ffo and .sym.
There is also a capabilities file for each device type, and it consists of the files
whose extensions are .cff, which are located with the DD files.
The capabilities file is used to define the device capabilities (for example, dynamic
block instantiation capability) and the resources available for creating function
block applications (for example, Resource and Transducer blocks).
The files are organized in the manufacturers’ folder.
RSFieldbus software needs DD and capabilities files to configure a device.