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Operation, 2 description of the ff block system, 3 used abbreviations – KROHNE PTIFLEX 2200 FOUNDATION FIELDBUS User Manual

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4

OPERATION

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OPTIFLEX 2200 C

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09/2013 - 4002573201 - AD FF OPTIFLEX 2200 R01 en

4.2 Description of the FF block system

The Foundation Fieldbus is a Local Area Network (LAN) for connecting field devices like sensors
and actuators. One of the main benefits of Foundation Fieldbus is line saving in comparison to
the traditional 4...20 mA technology.

The different device functions are implemented in a block-based scheme within a user
application. In this block scheme, a distinction is made between the Resource Block, Transducer
Block and Function Block.

4.3 Used abbreviations

1 Resource Block (RB)
2 Transducer Block (TB)
3 Function Block (FB)
4 Device FF communication
5 Foundation Fieldbus

AI

Analogue Input Block

BLK

Block mode

PID

Proportional Integral Derivate Block

MAN Manual mode

RB

Resource Block

Auto

Automatic mode

TB

Transducer Block

OOS

Out Of Service mode

R

Read

OD

Object Directory

W

Write

IV

Initial Value

RW

Read and Write

PV

Process Value (factory settings)

SP

Set Point