Math Expressions and an example
Expressions on recorder Mathematics Functions
+ Addition
-
Subtraction
* Multiplication
/ Division
SIN(x) sin(x)
COS(x) cos(x)
EXP(x) e
x
SQRT(x) Square root of x
LN(x) log
(x)
TG(x) tan(x)
CTG(x) 1/tan(x)
ASIN(x) Sin
-1
(x)
ACOS(x) Cos
-1
(x)
ATG(x) Tan
-1
(x)
LOG(x) log
(x)
ABS(x) Absolute of x
SQ(x) x
2
ROUND(x) The closest integral number to x
HI(x,y) The bigger value between x and y
LO(x,y) The smaller value between x and y
INV(x) 1/x
PCT(x,Hi,Lo) PCT % = x / Hi-Lo, x: Target Value, Hi: High Value, Lo: Low Value
x%y Remainder of x/y
x^y x
y
POW (x,y) x
y
Note:
▲ To add the option of Math, Counter & Totalizer on recorder, it is necessary to order a
Boot ROM with this option. Then, open the housing and replace the Boot ROM.
An example of Math
Three AI analog inputs and one Math channel. Set up a Math channel after setting up three analog inputs.
In Channel mode as 4.1 Channel, press Math key to get into Math channel. Define the Name,
Description, enable Type, define Log Speed, Log Method, and do Math Expression / Equation. Then,
select Display mode as 4.2 Display. Define mode, Trend Direction, Background color. If Pens 1, 2, 3
have been used for three analog inputs, then select Pen 4 to be used for Math. Press Enter key under
Channel column of Pen 4, then select MATH1. Define Color, Width of trend, DisplayHi and DisplayLo.
Press Back key twice to return to the beginning of display all configurations will be memorized. Then
the Math starts working.
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