Appendix H. Foundation Fieldbus Communication
160
PanaFlow™ LC User’s Manual
H.9 Analog Input Block
The Analog Input (
AI
) Block (see
below) is designed as a generalized signal conditioning function.
The output from an
AI
block can be connected to the Fieldbus. The
AI
block receives and processes data
measured by the
Transducer Block
and provides additional functions such as scaling, filtering, alarm
generation, and trending.
Figure 138: Analog Input (AI) Block
H.10 PID Block
The
PID
function offers control based on a programmable algorithm. The
PID
function block may be used with
a valve to control flow.
Note:
See
Foundation Fieldbus Specifications
for more detail on use of the
PID
Block.
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