11 Operation via FOUNDATION Fieldbus Proline Prowirl 72 FOUNDATION Fieldbus
80 Endress + Hauser
11 Operation via FOUNDATION Fieldbus
11. 1 Block model
In the FOUNDATION Fieldbus interface, all the device parameters are categorized according to
their functional properties and task and are generally assigned to three different blocks. A block may
be regarded as a container in which parameters and the associated functionalities are contained. A
FOUNDATION Fieldbus device has the following block types:
• A Resource Block (device block):
The Resource Block contains all the device-specific features of the unit.
• One or more Transducer Blocks: A Transducer Block contains all the device's measurement-
related and device-specific parameters. The measurement principles (e.g. flow, temperature) are
depicted in the Transducer Blocks in accordance with the FOUNDATION Fieldbus Specification.
• One or more function blocks: function blocks contain the device's automation functions. We
distinguish between different function blocks, e.g. Analog Input Function Block, Analog Output
Function Block. Each of these function blocks is used to execute different application functions.
Depending on how the individual function blocks are arranged and connected, various automation
tasks can be realized. In addition to these blocks, a field device may have other blocks, e.g. several
Analog Input Function Blocks if more than one process variable is available from the field device.
Proline Prowirl 72 FOUNDATION Fieldbus has the following blocks:
• A Resource Block (device block)
• Five Transducer Blocks
• Three function blocks consisting of:
– Two Analog Input Function Blocks for the process variables volume flow, corrected volume
flow, calculated mass flow and totalizer.
–A Discrete Output
A0003796-EN
Fig. 30: Prowirl 72 FF block model
Transducer
Blocks
Resource
Block
Analog Input
Function Blocks
FOUNDATION
Fieldbus
Discrete Output
Block
Transducer
Blocks
Resource
Block
Analog Input
Function Blocks
Discrete Output
Block
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