Yokogawa DR240 - Manual (Page 174)

10-32 IM DR231-01E
Starting/Stopping Report Making
Report making can be started or stopped in two ways:
• Press the FUNC key and select REPORT_START or REPORT_STOP from the FUNC menu.
• Use the event/action functions to define the start/stop of making a report for the following
events:
Edge action: You can define every event as an edge action to start/stop report making.
Level action: You can use remote, alarm, relay and end-of-chart signals as events to start/stop
report making. Report making starts at the same time that any of these events
occur. Report making 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 information on the ranges.
• 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 on 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.
Time Relationship Between the Settings of the REPORT_START/STOP Menu Items
and Report Making
The following figure shows the time relationship between the settings of the REPORT_START/
STOP menu items and report making.
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 report making after the start of report making are fewer
in number than those included in the second and subsequent rounds of report making.
• The DR recorder samples data before stopping report making. The report created when the DR
recorder stops making reports thus includes those data.
• If the time when report making is started coincides with the time the report is created, the start
of report making precedes. Thus, no report is created.
• The data sampled at the same time report making started are included in first round of report
making. The report created when the DR recorder stops making reports thus includes those
data.
• If you have defined timer and match-time signals as events using the event/action functions so
the time report making starts matches the time the report is created, data items included in the
first round of report making are one data item greater in number than those included in the
second or any subsequent round of report making.
Processing Against Absence of Measurement
Measurement may not take place if the DR recorder is loaded beyond its processing capability. If
absence of measurement occurs, the DR recorder 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).
10.12 Working with the Report Function