Fgen Function Block - Honeywell UMC800 Reference Manual

Function Blocks

2.23 FGEN Function Block

Description
The FGEN label stands for Function Generator - 10 Segment. This block is part of the Auxiliary
category. It looks like this graphically on the Control Builder:
Function
Generate output characteristic curve based on up to 11 configurable "Breakpoints" for both input (X) and
Output (OUT) values.
OUT = interpolation of OUT (Yb) values for segment in which X falls.
•
If X <= X(1), then OUT = OUT(1)
•
If X >= X(11), then OUT = OUT (11)
ATTENTION: The X(n) value must be < X(n+1) value. Thus, if fewer than 11 breakpoints are needed, be
sure to configure any unneeded breakpoints with the same X and OUT values used for the previous
breakpoint.
Input
X = Analog Value
Output
OUT = Calculated Analog Value
72 Function Block Reference Guide
Continued next page
3/99