Emerson Rosemount 3144P Reference Manual page 161

Reference Manual
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4.8.3 LCD display transducer block (index number 1200)
The LCD display transducer block is used to configure the LCD display.
4.8.4 Analog input block (index number 1400, 1500, 1600,
and 1700)
The Analog Input Function Block (AI) processes the measurements from the sensor and
makes them available to other function blocks. The output value from the AI block is in
engineering units and contains a status indicating the quality of the measurement. The AI
block is used for scaling functionality.
4.8.5 PID block (index number 1800 and 1900)
The PID function block combines all of the necessary logic to perform proportional/
integral/derivative (PID) control. The block supports mode control, signal scaling and
limiting, feed forward control, override tracking, alarm limit detection, and signal status
propagation.
The block supports two forms of the PID equation: Standard and Series. Choose the
appropriate equation using the MATHFORM parameter. The Standard ISA PID equation is
the default selection and autotune.
4.8.6 Input selector (index number 2000)
The signal selector block provides selection of up to four inputs and generates an output
based on the configured action. This block normally receives its inputs from AI blocks. The
block performs maximum, minimum, middle, average, and 'first good' signal selection.
4.8.7 Output splitter (index number OSPL 2300)
The output splitter block provides the capability to drive two control outputs from a single
input. Each output is a linear function of some portion of the input.
4.8.8 Arithmetic (index number 2200)
This block is designed to permit simple use of popular measurement math functions. The
user does not have to know how to write equations. The math algorithm is selected by
name, chosen by the user for the function to be done.
4.8.9 Signal characterizer (index number 2100)
The signal characterizer block has two sections, each with an output that is a non-linear
function of the respective input. The non-linear function is determined by a single look-up
Reference Manual
F Fieldbus Configuration
OUNDATION
December 2019
161