Yokogawa Button Operated MV2000 - Manual (Page 49)

1-42 M-4660
1.9 Computation and Report Functions (/M1 and /
PM1 options)
Computation Functions
Expressions can be defined in special computation channels by using measured data or
computed data as variables. The computation channel data can be displayed or saved.
For configuration instructions, see section 10.1.
• Dedicated Computation Channels
Model Number of
Channels Channel
Numbers
RD-MV1004, RD-MV1008, RD-MV2008 12 101 to 112
RD-MV1006, RD-MV1012, RD-MV1024 24 101 to 124
RD-MV2010, RD-MV2020, RD-MV2030, RD-
MV2040, RD-MV2048 60 101 to 160
• Operations
In the table below, [001] represents the measured value of channel 001.
Type Example Description of the Example
Basic
arithmetic 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] and 0
otherwise.
001.LE.002 The result is 1 when [001] is less than or equal to [002]
and 0 otherwise.
001.GT.002 The result is 1 when [001] is greater than [002] and 0
otherwise.
001.GE.002 The result is 1 when [001] is greater than or equal to [002]
and 0 otherwise.
001.EQ.002 The result is 1 when [001] is equal to [002] and 0
otherwise.
001.NE.002 The result is 1 when [001] is not equal to [002] and 0
otherwise.
Logical
computation 001AND002 The result is 1 when [001] and [002] are nonzero and 0
otherwise.
001OR002 The result is 1 when [001] or [002] is nonzero and 0 when
neither of them are.
001XOR002 The result is 0 when [001] and [002] are both zero or both
nonzero, and 1 otherwise.
NOT001 The result is 1 when [001] is zero and 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 page 1-43 for information on how to use this function.