Yokogawa Removable Chassis DX1000N - Manual (Page 10)

IM 04L41B01-05EN
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1.2 Recording and Saving Data
This section explains the types of data that a DX with the /AS1 advanced security option
can record and how to save them.
Data Types
The types of data that the DX can store to files are listed below. For information about file
name extensions, see page 1-9.
Data Type Description
Display data •This is the waveform data that appears on the trend display. Measured data is
recorded at the set sampling interval. The sampling interval is determined by
the trend update interval.
•The maximum and minimum values measured within each sampling interval
are saved.
•You can write a header character string into the file (shared with other files).
•The file contains alarm and message information, an operation log, login
information, and setup data.
•The data format is binary (undisclosed). The data is encrypted.
Event data •Measured data acquired at the set sampling interval.
•You can write a header character string into the file (shared with other files).
•The file contains alarm and message information, an operation log, login
information, and setup data.
•The data format is binary (undisclosed). The data is encrypted.
Manual sampled data
•The instantaneous measured data values when a manual sample operation is
performed.
•You can write a header character string into the file (shared with other files).
•The data format is text.
Report data (/M1 and /PM1 options)
•Hourly, daily, weekly, and monthly data. Report data is recorded at specific
intervals (once a day, once a week, and so on).
•You can write a header character string into the file (shared with other files).
•The data format is text.
•You can create reports in XML spreadsheet format.
Snapshot data (screen-image data)
•DX screen-image data.
•Can be saved to a CF card.
•The data format is PNG.
Setup data •The DX setting data.
•The data format is binary (undisclosed). The data is encrypted.
Custom display setup data
•The custom display setup data.
•The data format is text.
Change
Settings Log
•A history of setting changes.
•The data format is text.
• Display data and event data
Display data is similar to the conventional chart-sheet recording of the past. Event
data is useful when you want to record 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
Instantaneous value during sampling
Maximum value per sampling interval
Minimum value per sampling interval