Index – Yokogawa DAQWORX User Manual

Page 33

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IM WX102-01E

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Index

Before Operation

• If the time when data are sampled coincides with the report start, the data sampled

at the same time report making started are included in first reporting round. The
report created when the DA stops making reports thus includes those data.

• If you have defined timer and match-time signals as events using the event/action

functions in order to let the report start match the actual reporting, data items
included in the first reporting round will have one data item more than those
included in the second or any subsequent reporting round.

Temporary measurement omissions

Measurement may not take place if the DA is loaded beyond its processing capability. If

a measurement omission occurs, the DA compensates for the missing data with the data

it measures immediately after recovering from the measurement omission (the data for

the period with no measurement thus match those acquired immediately after recovering

from the temporary measurement omission).

Power failures during reporting

The DA makes a report immediately after it recovers from the power failure and then

stops reporting.

Computing results: The DA computes data measured up to the point immediately

before the power failure.

Reporting time:

The time when the power failure occurred.

Handling of faulty data

If data being computed contain any abnormalities, the DA treats the data as summarized

in the following table.

Note that in the case of positive and negative overflows, minimum and maximum values

are included in the computing.

Type of Faulty Data

Average

Minimum/
Maximum

Instantaneous

ValueSum

Positive overflow

Not computed Computed

Takes faulty data as
the computing result

Not computed

Negative overflow

Not computed

Computed

Takes faulty data as
the computing result

Not computed

Channels included in
measurement set to SKIP

Not computed Not computed

Takes faulty data as
the computing result

Not computed

No channel included in
measurement

Not computed

Not computed

Takes faulty data as
the computing result

Not computed

Error, power failure

Not computed

Not computed

Takes faulty data as
the computing result

Not computed

Incapability of data
output

Not computed

Not computed

Takes faulty data as
the computing result

Not computed

1.5 DA100 Functions

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