Chapter 11 Computation/Report Function (Option); Overview Of The Computation Function - Omega RD-MV100 Series User Manual

Chapter 11 Computation/Report Function (Option)

11.1 Overview of the Computation Function

Equations can be written to computation channels by using the measured data of
measurement channels or computed data from computation channels as variables. The
result of the computation can be displayed or stored. Computation is performed every
scan interval. In addition, a moving average ("rolling average") can be calculated on the
computed result of a computation channel, and the moving average value can be used
as the computed data for that channel.
For report functions, see sections 11.11 to 11.13.
Computation Function
Computation channels
Types of Computations
The following computations can be performed:
In the table below, y represents the computed result. X and n generally represent the
measured data of a measurement channel and a constant. For details, see "Data that
can be used in equations."
Data that can be Used in Equations
The following types of data are used to perform computations. For TLOG computation,
only measured and computed data can be used. For all other computations, all types of
data can be used.
Measured data
The data are specified using channel numbers in computing equations. If scaling is in
effect, the scaled values are used in the computation.
Computed data
The data are specified using channel numbers in computing equations.
Constants (K01 to K12)
The values assigned to K01 to K12 can be used as constants. Enter the values as K01
to K12 in the equations.
Range of constants (Maximum number of significant digits is 5) :
–9.9999E + 29 to –1.0000E – 30, 0, 1.0000E – 30 to 9.9999E + 29
Model Channels
RD-MV102 Channel 31 to 34 (4 channels)
RD-MV104 Channel 31 to 34 (4 channels)
RD-MV106 Channel 31 to 42 (12 channels)
RD-MV112 Channel 31 to 42 (12 channels)
Type
Four arithmetical operations
SQR
ABS
LOG
EXP
Relational computation
Logical computation
Statistical computation (TLOG)
Description
Addition (+), subtraction (–), multiplication (×), and division
(/)
n
Determines the power. y = X
Determines the square root.
Determines the absolute value.
Determines the common logarithm. y = log
x
Determines the exponent. y = e
Determines <, ≤, >, ≥, =, ≠ and outputs "0" or "1".
Determines the AND (logical product), OR (logical sum),
XOR (exclusive logical sum) of two channels, NOT
(negation) of an arbitrary channel and outputs "0" or "1".
Determines the sum, maximum, minimum, average, and
maximum – minimum (P–P) values at specified time
intervals over the time interval. There are three timers used
to set the time interval. For detail, see section 11.7.
x
10
11
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