Siemens SITRANS LG270 Operating Instructions Manual page 70

Function blocks
Transducer Block (TB)
The Transducer Block "Analog Input (AI)" takes the original measured value (Secondary Value 2),
carries out the min./max. adjustment (Secondary Value 1), carries out a linearization (Primary Value)
and makes the values on its output available for further function blocks.
min/max
Linearization
adjustment
% Lin%
m(d)
Sensor_Value
TB
Secondary Secondary Primary
Value 2 Value 1 Value
Fig. 39: Schematic presentation Transducer Block (TB)
Function block Analog Input (AI)
The function block "Analog Input (AI)" takes the original measured value selected by a Channel
Number and makes it available to additional function blocks on its output.
Fig. 40: Schematic presentation function block Analog Input (AI)
Function block Discret Input (DI)
The function block "Discret Input (DI)" takes the original measured value selected by a Channel
Number and makes it available to additional function blocks on its output.
Fig. 41: Schematic presentation function block Discret Input (DI)
Function block PID Control
The function block "PID Control " is a key component for various tasks in the process automation
70 SITRANS LG270 - Operating Instructions PBD-51041071