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6. Device introduction
6.1 Fieldbus Foundation communication protocol
Foundation Fieldbus™ is an all-digital, serial, two-way
communication system that serves as a Local Area Network
(LAN) for factory/plant instrumentation and control devices.
Important. Further information on FOUNDATION Fieldbus can be
found from the Fieldbus Foundation organization website www.
fieldbus.org , from the ABB website www.abb.com/fieldbus and/or
from standards IEC 61158, IEC 61784, EN 50170/DIN 19245 and
EN 50020 (FISCO model)
6.2 Feature overview
The 2600T-266 PdP Foundation Fieldbus is compliant to the
communication Protocol FOUNDATION™ Fieldbus specification
version 1.8. The 2600T-266 PdP FF is a Link Master Device
implementing the following Blocks:
—
1 Enhanced Resource Block
—
2 Enhanced Analog Input Function Blocks
—
1 Standard Analog Input Function Block
—
1 Enhanced PID Function Block
—
1 Standard Arithmetic Function Block
—
1 Standard Integrator Function Block
—
1 Standard Input Selector Function Block
—
1 Standard Control Selector Function Block
—
1 Standard Signal Characterizer Function Block
—
1 Enhanced Pressure with Calibration Transducer Block
—
1 Custom HMI Transducer Block
—
1 Custom Advanced Diagnostic Transducer Block with
"Plugged Input Line Detection" algorithm.
6.3 Registration details
All the Registration details are available from the Fieldbus
Foundation webpage at the following link:
http://www.fieldbus.org/index.php?option=com_
mtree&task=viewlink&link_id=1565&ffbstatus=Registered&Ite
mid=324
Instrumentation Technician's Domain (DAP)
Strumentista
Resource
Block
(Only 1)
Physical
I/O
DAP
Figure 35: Device function block application
Channel
Transducer
Block(s)
Channel
Control Engineer's Domain (CAP)
6.4 FF device structure
The Foundation Fieldbus devices can be divided into two parts
under the point of view of technical competence who must take
care of its configuration and use.
— The Device Application Process (DAP) is device specific
and stays with the device wherever it is used.
— The Control Application Process (CAP) is configured for
the specific plant location and may be spread over
multiple devices.
Communication between the DAP and CAP takes place using
channels. Each I/O function block in the CAP has exclusive use
of exactly one channel. A channel may be bi-directional and it
may have multiple values.
6.5 Device Application Process (DAP)
The DAP is used primarily by the instrumentation technician or
maintenance personnel for configuring I/O when the instrument
is going to be installed in the plant and/or during maintenance
operations and for this reason mainly focused on the Resource
Block and Transducer Blocks of the device.
6.6 Control Application Process (CAP)
The CAP is used by the control engineer for configuring the plant
control strategy and for this reason mainly focused on the
Function Blocks of the device.
Important. For convenience, all the device parameters mentioned in
this document are written with the prefix indicating the block into
where they are mapped:
– RB_
= Resource Block
– PRTB_ = Pressure Transducer Block
– ADTB_ = Advanced Diagnostic Transducer Block
– HMI_
= HMI Transducer Block
– AIx _
= Analog Input Function Blocks where the x is the
number of the AI (1, 2, 3)
Device
VFD
Analog
Input
Link
Block
CAP
Digital
Link
Input
Block
Link
Link
PID
Block
2600T Series Pressure transmitters | OI/266/FF-EN Rev. B 29
6 Device introduction
Important. For all the complete
details about the device
parameters and their block
mapping refer to the APPENDIX A
of the addendum of this is manual
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