Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1356

■Block memory
Operand: (d1)
Device Symbol
+0 BW
+1
■Operation constant
Operand: (s2)
Device Symbol
+0 SN
■Local work memory
Operand: (d2)
Position Symbol
+0 X1
+1
+2 Y1
+3
+4 X2
+5
+6 Y2
+7
 
+4SN-4 Xn
+4SN-3
+4SN-2 Yn
+4SN-1
Processing details
This instruction outputs values according to the inverse function generator pattern consisting of n break points as specified by
(s2) with regard to the input value (E1).
Y
E1
(X , Y )
1 1
BW
The S.IFG instruction performs the following operations.
Condition
E1Y1
Y <E1Y (i=2 to n)
i-1 i
Y <E1
n
• If the value specified in (n) is 0, no processing is performed.
• If X > X , processing is stopped when n = i - 1. (The subsequent data is ignored.)
i - 1 i
• When there are two or more X
11 PROCESS CONTROL INSTRUCTIONS
1354
11.4 Correction Operation Instructions
Name Recommended range
Output value -999999 to 999999
Name Recommended range
Number of break 0 to 48
points
Name Recommended range
Break point -999999 to 999999
coordinates
Break point
coordinates
Break point
coordinates
Break point
coordinates

Break point
coordinates
Break point
coordinates
(X , Y )
3 3
(X , Y )
2 2
for the same Y
i
(X , Y )
4 4
X
Output value (BW)
BW=X1
X -X
i i-1
BW= ×(E1-Y )+X
i-1 i-1
Y -Y
i i-1
BW=X
n
, the X with smaller i is selected.
i
Data type Standard Set by
value

Single-precision System
real number
Data type Standard Set by
value
16-bit unsigned 0 User
binary
Data type Standard Set by
value

Single-precision User
real number