Yokogawa DAQWORX - Manual (Page 32)

1-24 IM WX102-01E
Unit of Summation (SUM UNIT)
Input data, such as the flowrate, with units in /sec, /min, /hour or /day, give results of
computing different from their actual values, when simply summed. This occurs because
the unit of such a data item differs from that of the measurement interval. In that case,
you can take the output after having converted the unit of summation so it matches that
of the input data item applied.
Unit of Input (Preset Unit) Conversion Formula
INTVL (no conversion)
Σ (measured data values)
/sec Σ (measured data values) × measurement interval
/min Σ (measured data values) × measurement interval/60
/hour Σ (measured data values) × measurement interval/3600
/day Σ (measured data values) × measurement interval/86400
Start/Stop Reporting
Use the event/action functions to define reporting start/stop for the following events:
• Edge action : Define every event as an edge action to start or stop reporting.
• Level action : Use remote, alarm, relay signals as events to start or stop report making.
Reporting starts at the same time that any of these events occur.
Reporting stops when the event clears.
Note
• If you start report making, all reports created up to that point are reset.
• When report making is in progress, you cannot make changes to measurement channels,
measuring ranges or dates and times, nor can you copy range information.
• If any computed data are included in your report making, let computing start first and then
get report making started. If you fail to enable computing, the data in your reports will
become meaningless because no change takes place in the computed data.
• If you want the start of computing and report making enabled at the same time, use the
event/action functions to assign both of these instructions to the same event as actions.
Output Report
Report outputting can be started in communication.
Time Relationship Between the Report Start/Stop and Report Making
The following figure shows the time relationship between the report start / stop, and the
reporting in progress.
Report 1
Report 2
Report 3
Report n
Start of report making
Denotes the point in time a report is created.
Time to make report Time to make report Time to make report
Stop of report making
• Data items included in the first round of reporting after the report start are fewer
in number than those included in the second and subsequent rounds of report
making.
• If the time when data are sampled coincides with report stop, the DA samples the
data before the report stop. The report created when the DA stops making reports
thus includes those data.
• If the report start coincides with the time the report is created, the start precedes,
thus, no report is created.
1.5 DA100 Functions