Samson 3730-5 - Foundation; F OUNDATION Fieldbus Block Model

3 FOUNDATION™ fieldbus block model
FOUNDATION™ fieldbus assigns all the functions and data of a device to different types of
blocks. Each type of block has a different range of tasks to fulfill in the block model.
The following types of blocks are implemented in the SAMSON Type 3730-5 Positioner:
4
Resource Block (RES)
The Resource Block contains all the specific characteristics associated with a device on the
Fieldbus, for example, device name, manufacturer number and serial number.
A device can only have one Resource Block.
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Function blocks
Function blocks are responsible for the control behavior of a F
OUNDATION™ fieldbus de-
vice. A F
OUNDATION™ fieldbus application can be configured by connecting the inputs
and outputs of function blocks.
The following function blocks are implemented in the Type 3730-5:
– 1x Proportional Integral Derivative Function Block (PID); execution time 20 ms
– 1x Analog Output Function Block (AO); execution time 30 ms
– 2x Discrete Input Function Blocks (DI); execution time 20 ms
– 2x Discrete Output Function Blocks (DO); execution time 30 ms
– 1x Multiple Analog Input Function Block (MAI); execution time 50 ms
– 1x Multiple Analog Output Function Block (MAO); execution time 50 ms
– 1x Input Selector Function Block (IS); execution time 30 ms
4
Transducer Blocks (TRD)
Each AI or AO Function Block has a Transducer Block which contains all data and de-
vice-specific parameters to link the device to the process value (sensor or final control ele-
ment).
The following Transducer Blocks (corresponding to the Function Blocks) are implemented:
– 1x Advanced Positioner Transducer Block (AO TRD)
– 2x Discrete Input Transducer Blocks (DI TRD)
– 2x Discrete Output Transducer Blocks (DO TRD)
– 1x Multiple Analog Input Transducer Block (MAI TRD)
– 1x Multiple Analog Output Transducer Block (MAO TRD)
KH 8384-5 EN 11
FOUNDATION™ fieldbus block model