Yokogawa Removable Chassis DX1000N - Manual (Page 37)

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IM 04L41B01-01E
1.4 Data Storage Function
This section explains the types of data that the DX can record and how to store them.
For information about the data storage function on DXs with the /AS1 advanced
security option, see the Advanced Security Function (/AS1) User’s Manual,
IM04L41B01-05EN.
Data Types
The types of data that the DX can record are as follows:
Data Type Description
Display data • Waveform data displayed on the trend display. The measured data is recorded
as a specified sampling interval. The sampling interval is specified using the
trend interval.
• The minimum and maximum values among the measured data within the
sampling interval are saved.
• A header string (common to other files) can be written in the file.
• The display data contains alarm and message information.
• Data format: Binary (Undisclosed)
Event data • Measured data that is recorded at a specified sampling interval. There are two
modes. One mode starts recording when a trigger event occurs. The other
mode records at all times.
• A header string (common to other files) can be written in the file.
• The event data contains alarm and message information.
• Data format: Binary (Undisclosed)
Manual sampled
data
• Instantaneous value of the measured data when a manual sample operation is
executed.
• A header string (common to other files) can be written in the file.
• Data format: Text
Report data
(/M1 and /PM1
options)
• Hourly, daily, weekly, and monthly report data. Report data is created at an
interval that is determined by the report type (one hour for hourly reports, one
day for daily reports, and so on).
• A header string (common to other files) can be written in the file.
• Data format: Text
• The data can be converted to XML spreadsheet data (release numbers 4 and
later).
Snapshot data
(screen image
data)
• The image data of the DX screen when the snapshot operation is executed.
• The data can be saved to a CF card.
• Data format: PNG
Setup data • The setup data of the DX.
• Data format: Binary (Undisclosed)
Custom Display
Setup Data
• The custom display setup data of the DX.
• Data format: text
• Display data and event data
Display data can be likened to the conventional recording on the chart sheet and
are useful for long-term recording. Event data is useful when you wish to record the
measured data in detail.
Measured data per
scan interval
Display data
Event data
Sampling interval of display data
Scan interval
Time
Sampling interval of event data
Maximum value per sampling interval
Minimum value per sampling interval
Instantaneous value during sampling