KROHNE GFC 300 FOUNDATION FIELDBUS - Manual (Page 9)

OPERATION
4
9
GFC 300
www.krohne.com 07/2012 - 4001866001 - AD GFC 300 FF 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
AR Arithmetic Block MAN Manual mode
IT Integrator Block Mix Mix mode (R, W and R/W)
PID Proportional Integral Derivate Block Auto Automatic mode
RB Resource Block OOS Out Of Service mode
TB Transducer Block OD Object Directory
R Read SP Set Point
W Write IV Initial Value
R/W Read and Write PV Process Value (factory settings)