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 () Returns the sine of the sin(ch(“TagNo.00001” ))
cos () Returns the cosine of the cos(ch(“TagNo.00001” ))
tan () Returns the tangent of the tan(ch(“TagNo.00001” ))
asin () Inverse sine asin(ch(“TagNo.00001” ))
acos () Inverse cosine acos(ch(“TagNo.00001” ))
sinh () Hyperbolic sine sinh(ch(“TagNo.00001” ))
cosh () Hyperbolic cosine cosh(ch(“TagNo.00001” ))
tanh () Hyperbolic tangent tanh(ch(“TagNo.00001” ))
pow (, ) to the power of pow(ch(00001),
ch(00002))
sqrt () Square root sqrt(ch(00001))
logE () Natural logarithm logE(ch(00001))
log10 () Common logarithm log10(ch(00001))
expE () e to the power of expE(ch(00001))
exp10 () 10 to the power of exp10(ch(00001))
abs () Absolute value abs(ch(00001))
max (, ..., ) Maximum value among multiple
specified values max(ch(00001),
ch(00002),ch(00003))
min (, ..., ) Minimum value among multiple
specified values min(ch(00001),
ch(00002),ch(00003))
pp (, ..., ) (Maximum - minimum) among
multiple specified values pp(ch(00001),ch(00002),
ch(00003))
sum (, ..., ) Sum of multiple specified values sum(ch(00001),
ch(00002),ch(00003))
ave (, ..., ) Average of multiple specified values ave(ch(00001),
ch(00002),ch(00003))
poly(, 0 >, 1 >, ..., 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 () Returns the minimum integer greater
than ceil(ch(00001))
floor () Returns the maximum integer less
than floor(ch(00001))
limit(,,) 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 () Returns 1 if \value is NaN, otherwise
returns 0. IsNaN(ch(00001))
2.5 Settng Computatons (Settng the Computaton Channels)