Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 241)

5.8 DDC Instructions
5.8.10 Inverse Function Generator (IFGN)
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5.8.10 Inverse Function Generator (IFGN)
( 1 ) Operation
The IFGN instruction generates a function based on the parameters specified in the parameter table in the same way as
the FGN instruction.
It then uses the function to calculate output value X based on the value of input Y, i.e., the opposite direction from the
FGN instruction.
The structure of the parameter table is the same as for the FGN instruction.
ΠCreate the parameter table so that Y
1
< Y
2
< ... < Y
N
.
Output value X is calculated from
input value Y for the function
generated by the parameter table.
Input value Y
X 1 X 2 X 3
Y
1
Y 2
Y
3
Output value X
…
…
X N
Y N
Function generated by setting X
1…N
,
Y 1…N in the parameter table.