Yokogawa Touch Screen GP20 - Manual (Page 62)

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IM 04L51B01-01EN
1.5 Configuring Math Channels
Configure math channels. You can define expressions using measured data and computed
data as variables, compute expressions, and display and save the results.
1.5.1 Setting Basic Computation Operations (Error indications, operation at
start, and overflow handling)
Path
GX/GP: MENU key > Browse tab > Setting > Setting menu Math channel settings > Math
action settings
Web browser: Config. tab > Math channel settings > Math action settings
Hardware configurator: Math channel settings > Math action settings
Description
Setup Item Selectable Range or Options Default Value
Value on Error +Over, –Over +Over
START/STOP key action Off, Start/Stop, Reset + Start/Stop Start/Stop
Value on Error
Set how to display computation errors.
START/STOP key action
Set the action to execute when the START/STOP key is pressed.
Options Description
Off Computation does not start or stop when the START/STOP key is pressed.
Start/Stop Computation starts or stops when the START/STOP key is pressed.
Reset + Start/
Stop
Computation starts or stops when the START/STOP key is pressed. Before
computation starts, computation is reset.
Value on Overflow
Setup Item Selectable Range or Options Default Value
SUM, AVE Error, Skip, Limit Skip
MAX, MIN, P-P Over, Skip Over
SUM, AVE
Set how to handle overflow data when it is detected in the SUM or AVE computation of
TLOG or CLOG. This setting is also applied to report generation.
Options Description
Error Sets the computation result to computation error.
Skip Discards overflow data and continues the computation.
Limit Replaces overflow data with the limit value and continues the computation.
MAX, MIN, P-P
Set how to handle overflow data when it is detected in the MAX, MIN, or P-P computation of
TLOG or CLOG. This setting is also applied to report generation.
Options Description
Over Computes by using the overflow data.
Skip Discards overflow data and continues the computation.