Arysd - Omron NY532-5400 Reference Manual

ArySD

The ArySD instruction calculates standard deviation of the elements of an array.
Instruction
ArySD Array Element
Standard Deviation
Variables
Name Meaning
In[] (array) Array to
process
Size Number of
elements
Out Standard
deviation
* If you omit an input parameter, the default value is not applied. A building error will occur.
Bit strings
In[] (array)
Size
Out
Function
The ArySD instruction calculates the standard deviation of Size elements of array to process In[]
starting from In[0].
Standard deviation =
i: Subscript of In[], 0 to Size − 1
InM: Average value of In[0] to In[Size - 1]
NY-series Instructions Reference Manual (W560)
Name FB/FUN
FUN
I/O Description
Array to process
Input
Number of elements of In[]
for conversion
Output Standard deviation
OK
2
Σ(In[i]-InM)
i
Size−1
Graphic expression
(@)ArySD
EN ENO
In Out
Size
Valid range
Depends on data type.
Depends on data type.
Integers
OK OK
OK OK
2 Instruction Descriptions
ST expression
Out:=ArySD(In, Size);
Unit Default
*
---
2
--- ---
Times, durations, dates,
and text strings
2
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