YOKOGAWA Daqstation DX2000, User Manual

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IM 04L42B01-01E
1.8 Computation and Report Function (/M1 and
/PM1 Options)
Computation Function
Equations can be defined in computation channels by using the measured data or
computed data as variables. The result of the computation can be displayed or stored.
For the setting procedure, see section 9.1.
• Channels Dedicated to Computations
Model Number of Channels Channel Numbers
DX2004, DX2008 12 101 to 112
DX2010, DX2020, DX2030, DX2040, DX2048 60 101 to 160
• Computation Types
In the table below, [001] represents the measured value of channel 001.
Type Example Description of the Example
Four arithmetic
operation
001+002 Determines the sum of [001] and [002].
001-002 Determines the difference between [001] and [002].
001*002 Determines the product of [001] and [002].
001/002 Divides [001] by [002].
Power 001**002 Determines [001] to the power of [002]. y = X
n
Square root SQR(001) Determines the square root of [001].
Absolute value ABS(001) Determines the absolute value of [001].
Common logarithm LOG(001) Determines the common logarithm of [001]. y =
log
10
x
Natural logarithm LN(001) Determines the natural logarithm of [001]. y = lnx
Exponent EXP(001) Determines e to the power of [001]. y = e
x
Relational
computation
001.LT.002 The result is 1 when [001] is less than [002] or 0
otherwise.
001.LE.002 The result is 1 when [001] is less than equal to [002]
or 0 otherwise.
001.GT.002 The result is 1 when [001] is greater than [002] or 0
otherwise.
001.GE.002 The result is 1 when [001] is greater than equal to
[002] or 0 otherwise.
001.EQ.002 The result is 1 when [001] is equal to [002] or 0
otherwise.
001.NE.002 The result is 1 when [001] is not equal to [002] or 0
otherwise.
Logical computation 001AND002 The result is 1 when [001] and [002] are nonzero or
0 otherwise.
001OR002 The result is 1 when [001] or [002] or both are
nonzero or 0 otherwise.
001XOR002 The result is 0 when [001] and [002] are nonzero or
1 otherwise.
NOT001 The result is 1 when [001] is zero or 0 otherwise.
TLOG computation* TLOG.SUM(001) Determines the sum of [001].
TLOG.MAX(001) Determines the maximum value of [001].
TLOG.MIN(001) Determines the minimum value of [001].
TLOG.AVE(001) Determines the average value of [001].
TLOG.P-P(001) Determines the difference between the maximum
value and minimum value of [001].
* See “Usage of TLOG Computations” in this section.