Yokogawa DAQWORX - Manual (Page 61)

2-31 IM WX103-01E
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Index
Logger
Arthmetc Functons
Below are the arithmetic functions that are available. They are not case-sensitive.
Functon Descrpton Example
sin (<value>) Returns the sine of the <value> sin(ch(“TagNo.00001” ))
cos (<value>) Returns the cosine of the <value> cos(ch(“TagNo.00001” ))
tan (<tan>) Returns the tangent of the <value> tan(ch(“TagNo.00001” ))
asin (<value>) Inverse sine asin(ch(“TagNo.00001” ))
acos (<value>) Inverse cosine acos(ch(“TagNo.00001” ))
sinh (<value>) Hyperbolic sine sinh(ch(“TagNo.00001” ))
cosh (<value>) Hyperbolic cosine cosh(ch(“TagNo.00001” ))
tanh (<value>) Hyperbolic tangent tanh(ch(“TagNo.00001” ))
pow (<value1>, <value2>) <value1> to the power of <value 2> pow(ch(00001),
ch(00002))
sqrt (<value>) Square root sqrt(ch(00001))
logE (<value>) Natural logarithm logE(ch(00001))
log10 (<value>) Common logarithm log10(ch(00001))
expE (<value>) e to the power of <value> expE(ch(00001))
exp10 (<value>) 10 to the power of <value> exp10(ch(00001))
abs (<value>) Absolute value abs(ch(00001))
max (<value>, ..., <value>) Maximum value among multiple
specified values max(ch(00001),
ch(00002),ch(00003))
min (<value>, ..., <value>) Minimum value among multiple
specified values min(ch(00001),
ch(00002),ch(00003))
pp (<value>, ..., <value>) (Maximum - minimum) among
multiple specified values pp(ch(00001),ch(00002),
ch(00003))
sum (<value>, ..., <value>) Sum of multiple specified values sum(ch(00001),
ch(00002),ch(00003))
ave (<value>, ..., <value>) Average of multiple specified values ave(ch(00001),
ch(00002),ch(00003))
poly(<x>,<a 0 >,<a 1 >, ..., <a n >) Polynomial with variable parameters
Calculate
0 x
n
+a 1 x
n-1
+...+a n x
0
poly(ch(00001)
ch(00002),ch(00003)),
ceil (<value>) Returns the minimum integer greater
than <value> ceil(ch(00001))
floor (<value>) Returns the maximum integer less
than <value> floor(ch(00001))
limit(<x>,<a>,<b>) If x is outside the range defined by a
and b,round the value to b. limit(ch(00001),10,20)
rnd() Returns a random number between
0 and 1 ch(00001)*rnd()
IsNaN (<value>) Returns 1 if \value is NaN, otherwise
returns 0. IsNaN(ch(00001))
2.5 Settng Computatons (Settng the Computaton Channels)