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10. Appendix A
10.1. Fieldbus Technology
Layer
User Application or
Function Block
Application Process
(FBAP)
380
Experion PKS Series A Fieldbus Interface Module User's Guide
Functional Description
Defines blocks to represent different types of
application functions. The three types of blocks
are the Resource block, the Function block,
and the Transducer block. See the illustration
that follows this table.
The Resource block is used to describe
characteristics of the fieldbus device such as
the device name, manufacturer, and serial
number. Each fieldbus device requires one
Resource block.
The Function block is used to define the
specific characteristics of the process control
function. The Fieldbus Foundation provides a
set of pre-defined function blocks. A single
fieldbus device can include many Function
blocks to achieve the desired control
functionality. See the next section Standard
Function Blocks for more information.
The Transducer block is used to interface
Function blocks with local input/output devices.
They read sensors and command outputs, and
contain information such as calibration date
and sensor type. One Transducer block is
usually included for each input or output
Function block.
These associated objects are also defined in
the User Application: Link Objects, Trend
Objects, Alert Objects, and View Objects. They
provide linking between internal Function block
inputs and outputs, trending of Function block
parameters, reporting of alarms and events,
viewing of predefined block parameter sets
through one of four defined views.
The four defined views are View 1 - Operation
Dynamic, View 2 - Operation Static, View 3 -
All Dynamic, and View 4 - Other Static.
Honeywell
Associated Terms
Resource block
Function block
Transducer block
Link Objects
Trend Objects
Alert Objects
View Objects
View 1 - Operation
Dynamic
View 2 - Operation
Static
View 3 - All Dynamic
View 4 - Other Static
R400
July 2010
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