Legend For The Parameters; Foundation Tm Fieldbus Block Model - Samson FOUNDATION 3730-5 Mounting And Operating Instructions

13.3.1 Legend for the parameters

r = Read capability
w = Write capability
Index = Index number of the parameters in each block
O/S = Out of service mode
MAN = Manual mode
LO = Local override mode
AUTO = Automatic mode
CAS = Cascade mode
RCAS = Remote cascade mode
ROUT = Remote output mode
S = Static parameter
N = Non volatile parameter
D = Dynamic parameter
13.4 FOUNDATION
FOUNDATION Fieldbus assigns all the functions and data of a device to three 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
One Resource Block
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.
4
One AO Transducer Block
Each AI or AO Function Block has a Transducer Block which contains all data and de-
vice-specific parameters to connect the device to the process value (sensor or actuator).
The positioner output signal can be directly influenced over the AO Transducer Block.
4
Two DI Transducer Blocks
The DI Transducer Blocks connect binary input signals for transmission and processing
over the fieldbus.
4
One Analog Output Function Block
Function blocks are responsible for the control behavior of a FOUNDATION Fieldbus de-
vice. A FOUNDATION Fieldbus application can be configured by connecting the inputs
and outputs of function blocks.
The AO Function Block converts the output value from an upstream function block into a
control value for the valve.
TM
Fieldbus block model
Parameter description
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EB 8384-5 EN