6-13
6 Descriptions of New Functions Added into NB-TW01B
NB-series Programmable Terminals NB-Designer Operation Manual(V106)
6-2 System Parameters
6
6-2-3 Event History Setting
6-2-3 Event History Setting
Descriptions of Historical Events Storage
Storage Devices USB 1
Restoration
during outages
When the NB unit is restarted by the power interruption, if this option is checked, 1024 items of
the event history which were archived until the power interruption can be displayed in the
Event.
Export to CSV
File
Exports the Event History information in CSV format to the external memory. The path for
storing this CSV file is “/event/subfolder name/file name”.
Save as ms Makes the data sampling time accurate to the millisecond and records it into the CSV file.
Subfolder Sets the subfolder name of the external memory where the CSV file will be stored. Although
the default name is “Event”, the user can modify it.
Storage Type Daily File Stores the Event History information by day and records them into the
CSV file named in “yyyy mmdd” format.
Single File Stores the Event History information by the piece and records them
into the CSV file with the name of “Subfolder Name”.
Buffer Storage When the data size written to the external memory reaches to the specified buffer size, the
writing is performed only once. “Default” means unbuffered, i.e. the writing operation will
immediately be performed once the data is generated.
Storage Period Sets the upper limit for the event history with the unit of “Day” for Daily File and “Record” for
Single File. When the [Daily File] is selected, the file will be named in “yyyy mmdd” form and
the Storage Period is the upper limits of the number of CSV files in this path; if the Storage
Period is exceeded, the oldest file will be deleted. If the [Single File] is selected, the file will be
named in “Subfolder Name” form, the Storage Period is the upper limit of the records archived
in the file; the archived records are reached to the Storage Period, the storage will not be
continued. (yyyymmdd refers to the execution date.)
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