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Yokogawa Value Series FX1000 User Manual

Page 214

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9-9

IM 04L21B01-01EN

Computation and Report Functions (/M1, /PM1, and /PWR1 Options)

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App

Index

TLOG Computation

In the explanation below, an expression containing a computing element, an internal
switch (S), a relay (I), a flag (F), and power measurement elements—voltage, current,
frequency, and power factor—cannot be written in e1. In addition, only one TLOG
computation can be specified in a single computing equation.

TLOG.MAX( )

Maximum value
(Syntax) TLOG.MAX(e1)
(Condition) Determines the maximum value of channel e1.

TLOG.MIN( )

Minimum value
(Syntax) TLOG.MIN(e1)
(Condition) Determines the minimum value of channel e1.

TLOG.AVE( )

Average value
(Syntax) TLOG.AVE(e1)
(Condition) Determines the average value of channel e1.

TLOG.SUM( )

Sum value
(Syntax) TLOG.SUM(e1)
(Condition) Determines the sum of channel e1.

TLOG.P-P( )

Maximum - minimum value
(Syntax) TLOG.P-P(e1)
(Condition) Determines the maximum - minimum value of channel e1.

Expression Example

TLOG.MAX(01)+K01*SQR(02)

Examples of Equations That Are Not Allowed

TLOG.AVE(01)+TLOG.AVE(02)
Reason: TLOG appears twice in one equation.

TLOG.AVE(ABS(01))
Reason: A computing element is used inside the parentheses.

9.2 Writing Expressions