Instructions fun 061 dfl digital filter – Toshiba 6F3B0253 User Manual
Page 162
6F3B0253
160
T1-16S User’s Manual
7. Instructions
FUN 061
DFL
Digital Filter
Expression
Input
−
[ A DFL B
→
C ]
−
Output
Function
When the input is ON, this instruction calculates the following formula to perform digital filtering for
input data A by filter constant by B, and stores the result in C.
(
)
y
FL
x
FL
y
n
n
n
= −
Ч
+
Ч
−
1
1
Here; x
n
is input data specified by A
FL is filter constant, 1/10000 of data specified by B (data range: 0 to 9999)
y
n
is output data to be stored in C
y
n-1
is output data at last scan
This instruction is useful for filtering the analog input signal. C+1 is used for internal work data.
Execution condition
Input
Operation
Output
OFF
No execution
OFF
ON
Execution (FL is limited within the range of 0 to
9999)
ON
Operand
Name
Device
Register
Constant Index
X
Y
R
S
T.
C. XW YW RW SW T
C
D
I
J
K
A Input data
√
√
√
√
√
√
√
√
√
√
√
B Filter constant
√
√
√
√
√
√
√
C Output data
√
√
√
√
√
√
Example
The filtered data of XW04 is stored in D0110. (D0111 is used for internal work data)
XW04
D0110
Time
XW04
D0110
Time
When D0100 value is large
When D0100 value is small