Yokogawa Touch Screen GP20 - Manual (Page 72)

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IM 04L51B01-01EN
CLOG Computation
Only data of I/O channels, math channels, and communication channels can be used in
CLOG computations. Up to 30 channels can be written in the parentheses.
In the explanation below, an expression containing a computing element cannot be written
to e1, etc. In addition, only one CLOG computation can be specified in a single computing
expression.
CLOG.SUM( )
Sum value
(Syntax) CLOG.SUM(e1.e2.e4-e6)
(Condition) Determines the sum of the data of channels e1, e2, e4, e5, and e6 that are
measured at the same time.
CLOG.MAX( )
Maximum value
(Syntax) CLOG.MAX(e1.e2.e4-e6)
(Condition) Determines the maximum value among the data of channels e1, e2, e4, e5,
and e6 that are measured at the same time.
CLOG.MIN( )
Minimum value
(Syntax) CLOG.MIN(e1.e2.e5.e7)
(Condition) Determines the minimum value among the data of channels e1, e2, e5, and
e7 that are measured at the same time.
CLOG.AVE( )
Average value
(Syntax) CLOG.AVE(e1-e6)
(Condition) Determines the average value among the data of channels e1 to e6 that are
measured at the same time.
CLOG.P-P( )
Maximum – minimum value
(Syntax) CLOG.P-P(e1.e2.e5.e7)
(Condition) Determines the difference between the maximum and minimum values among
the data of channels e1, e2, e5, and e7 that are measured at the same time.
Expression Example
CLOG.MAX(0001.0002.A004-A006)+K001*SQR(0002)
Examples of Equations That Are Not Allowed
CLOG.AVE(0001.0003.0005)+CLOG.AVE(0002.0004.0006)
Reason: CLOG appears twice in one equation.
CLOG.AVE(001.ABS(001))
Reason: A computing element is used inside the parentheses.
1.5 Configuring Math Channels