Yokogawa DA100 - Manual (Page 103)

App-8 IM DA100-11E
Processing Against Absence of Measurement
Measurement may not take place if the DA is loaded beyond its processing capability. If absence of
measurement occurs, the DA compensates for the missing data with the data it measures
immediately after recovering from the absence of measurement (the data for the period with no
measurement thus match those acquired immediately after recovering from the absence of
measurement).
If Power Failure Occurs While Report Function Is Active
The DA takes different actions depending on the length of a power failure.
If the power failure time is longer than 12 hours:
The DA makes a report immediately after it recovers from the power failure and then stops making
reports. It does not execute printing based on the settings for automatic printing. Print out reports
either using the communication function or from the FUNC menu.
Results of computing: The DA computes data measured up to the point immediately before the
power failure.
Time of report making: The time when the power failure occurred.
If the power failure is less than 12 hours:
The DA takes different actions depending on the time it recovers from the power failure.
Time of Recovery Failure After the Time Before the Time
from Power of Report Making of Report Making
Condition after recovery Valid report function Valid report function
from power failure (start of report making enabled) (start of report making enabled)
Report making Immediately after recovery Time for report making
from power failure
Data included in report making Data measured up to the point Data measured over the given period
of power failure except the power failure time
Handling of Faulty Data
If data being computed contain any faulty data, the DA treats the data as summarized in the
following table, depending on the type of computing and faulty data.
Type of Faulty Data Average Minimum/ Instantaneous ValueSum
Maximum
Positive overflow Excluded from Included in Takes faulty data as Excluded from
computing computing the result of computing computing
Negative overflow Excluded from Included in Takes faulty data as Excluded from
computing computing the result of computing computing
Channels included in Excluded from Excluded from Takes faulty data as Excluded from
measurement set to SKIP computing computing the result of computing computing
No channel included in Excluded from Excluded from Takes faulty data as Excluded from
measurement computing computing the result of computing computing
Error Excluded from Excluded from Takes faulty data as Excluded from
computing computing the result of computing computing
Output of data disabled Excluded from Excluded from Takes faulty data as Excluded from
computing computing the result of computing computing
App.2 Report Function