Yokogawa FieldMate - Manual (Page 111)

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IM 01R01A01-01E 9th Edition : May 31, 2013-00
 Trend Parameter List Display Setting: View  Select Columns
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Figure E-4-5
 Trend Graph Update Duration Setting: Setting  Update Period
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Figure E-4-6
When periodic is selected, set the update duration.
You can set the update duration in one second increments from 5 to 99 seconds. The default is
30 seconds for HART device, 10 seconds for FOUNDATION fieldbus device.
If you exit Device Viewer, the update duration will return to the default value the next time you
display Device Viewer. The duration for updating the trend graph is the same as that for updating
the parameters in the self-diagnostic information display area.