B&B Electronics VFG3000 - Manual - Manual (Page 320)

P OP D EV ( ELEMENT , COUNT ) V LINX F IELDBUS G ATEWAY M ANAGER U SER M ANUAL
P AGE 304
P
OP
D
EV
(
ELEMENT
,
COUNT
)
A RGUMENT T YPE D ESCRIPTION
element int / float The first array element to be processed.
count int The number of elements to be processed.
D
ESCRIPTION
Returns the standard deviation of the count array elements from element onwards, assuming
the data points to represent the whole of the population under study. If you need to find the
standard deviation of a sample, use the
StdDev function instead.
F UNCTION T YPE
This function is passive.
R ETURN T YPE
float .
E
XAMPLE
Dev := PopDev(Data[0], 10)