Endress+Hauser Micropilot FMR52 - Page 18

Micropilot FMR51, FMR52
18 Endress+Hauser
Function Blocks
Block Content Number of
permanent
blocks
Number of
instantiable
blocks
Execution
time
Functionality
Resource Block The Resource Block contains all the
data that uniquely identifies the
field device. It is an electronic
version of a nameplate of the
device.
1 0 - enhanced
Analog Input
Block
The AI block takes the
manufacturer's input data, selected
by channel number, and makes it
available to other function blocks at
its output.
2 3 25 ms enhanced
Discrete Input
Block
The DI block takes a discrete input
value (e.g. indication of an level
limit), and makes it available to
other function blocks at its output.
1 2 20 ms standard
Mutiple
Analog Output
Block
This block is used to transfer analog
data from the bus into the device
1 0 20 ms standard
Mutiple
Discrete
Output Block
This block is used to transfer
discrete data from the bus to the
device.
1 0 20 ms standard
PID Block The PID block serves as
proportional-integralderivative
controller and is used almost
universally to do closed-loop-
control in the field including
cascade and feedforward.
1 1 25 ms standard
Arithmetic
Block
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.
1 1 25 ms standard
Signal
Characterizer
Block
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 table with 21 arbitrary x-y
pairs.
1 1 25 ms standard
Input Selector
Block
The input 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.
1 1 25 ms standard