2 benefits, 3 device descriptions – Orion Instruments Jupiter 2xx User Manual
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46-648 Jupiter Magnetostrictive Transmitters
Details regarding cable specifications, grounding, termination,
and other network information can be found in IEC 61158
or at www.fieldbus.org.
1.8.2 Benefits
The benefits of Fieldbus can be found throughout all phases
of an installation:
1. Design/Installation: Connecting multiple devices to a single
pair of wires means less wire and fewer I/O equipment.
Initial Engineering costs are also reduced because the
Fieldbus Foundation requires interoperability, defined as
“the ability to operate multiple devices in the same system,
regardless of manufacturer, without a loss of functionality.”
All Foundation Fieldbus devices must be tested for
interoperability by the Fieldbus Foundation. Orion Jupiter
device registration information can be found listed under
Magnetrol International at www.fieldbus.org.
2. Operation: With control now taking place within the
devices in the field, better loop performance and control are
the result. A Fieldbus system allows for multiple variables to
be brought back from each device to the control room for
additional trending and reporting.
3. Maintenance: The self-diagnostics residing in the smart
field devices minimizes the need to send maintenance
personnel to the field.
1.8.3 Device Descriptions
The function of a Fieldbus device is determined by the
arrangement of a system of blocks defined by the Fieldbus
Foundation. The types of blocks used in a typical User
Application are described as follows:
Resource Block describes the characteristics of the Fieldbus
device such as the device name, manufacturer, and serial
number.
Transducer Blocks contain information such as calibration
data and sensor type. They are used to connect the sensor to
the input function blocks.
Function Blocks are built into the Fieldbus devices as needed
to provide the desired control system behavior. The input
and output parameters of function blocks can be linked
over the Fieldbus. There can be numerous function blocks
in a single User Application.