16 object dictionary – Flowserve 3400IQ Digital Positioner User Manual

Page 84

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Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07

4

DD Download

The DD for the Logix 3400IQ digital positioner can be downloaded by going to the Software
Download section on the Flowserve website at www.flowserve.com.

Device Description Contents
A typical DD contains information about the device parameters and operation, such as:

Attributes, like coding, name, engineering unit, write protection, how-to-display, etc.

The menu structure for listing parameters, including names of menus and sub-menus.

The relationship of one parameter to others

Information about help text and help procedures

Maintenance, calibration and other necessary operation information.

Methods Wizard to help configure and commission the positioner

Standard and Device-specific DD
Standard DD descriptions for function blocks and transducer blocks are maintained by the Fieldbus
Foundation. These descriptions can be used as part of a field device DD by manufacturers to describe
the standard features of their devices. Device-specific descriptions are developed by manufacturers to
describe custom features which are unique to that particular device.

These two types of DDs (the standard and device-specific) can then be combined to provide a
complete DD for the field device.

8.16 Object Dictionary

Object Dictionary Description
AP objects are described in the Object Dictionary (OD) with each entry describing an individual AP
object and its message data. The message data may consist of a number of characteristics defined
for that particular object. The OD allows the FBAP of a device to be visible to the fieldbus communica-
tions system. Refer to the Fieldbus documentation for more information about OD.

Logix 3400IQ Digital Positioner Block Parameter Index
Table 8.21 lists the index numbers for all block parameters defined in the FBAP for Logix 3400IQ
digital positioner.

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