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Reference Manual
00809-0100-4021, Rev DA
November 2004
A-9
Rosemount 3144P
Status
If self-diagnostics detect a sensor burnout or a transmitter failure, the status of
the measurement will be updated accordingly. The status may also send the
PID output to a safe value.
F
OUNDATION Fieldbus Parameters
Software Upgrade in the Field
Software for the 3144P with F
OUNDATION fieldbus is easy to upgrade in the
field. Take advantage of software enhancements by loading new application
software into the device memory.
Backup Link Active Scheduler (LAS)
The transmitter is classified as a device link master, which means it can
function as a Link Active Scheduler (LAS) if the current link master device fails
or is removed from the segment. The host or other configuration tool is used
to download the schedule for the application to the link master device. In the
absence of a primary link master, the transmitter will claim the LAS and
provide permanent control for the H1 segment.
Function Blocks
Resource Block
• Contains physical transmitter information including available memory,
manufacture identification, device type, software tag, and unique
identification.
• PlantWeb Alerts enable the full power of the PW digital architecture by
diagnosing instrumentation issues, communicating the details, and
recommending a solution.
Transducer Block
• Contains the actual temperature measurement data, including sensor 1,
sensor 2, and terminal temperature.
• Includes information about sensor type and configuration, engineering
units, linearization, range, damping, and diagnostics.
LCD Block (when an LCD display is used)
• Configures the local display.
Analog Input (AI)
• Processes the measurement and makes it available on the fieldbus
segment.
• Allows filtering, engineering unit, and alarm changes.
PID Block (provides control functionality)
• Performs single loop, cascade, or feedforward control in the field.
Schedule Entries 25 (max.)
Links 30 (max.)
Virtual Communications Relationships (VCR) 20 (max.)