6 Descriptions of New Functions Added into NB-TW01B
6-20
NB-series Programmable Terminals NB-Designer Operation Manual(V106)
Saving the related information into the external memory:
When the sampling data is being saved into the external memory, if you want to remove the external
memory from the PT, the special system memory LB9154 (USB1) must be turned OFF before
removal. If the external memory is removed without the procedure, the data will be corrupted lost.
6-3-3 Data History, Data Log and XY Graph
Descriptions of Save Historical Data
Storage Device USB 1
Restoration
during outages
When the NB units restarts because of the power interruption, checking in this option allows
resetting the event information to the previous status of the power interruption.
Export to CSV
File
Export the data information in CSV format to the external memory. The path for storing this
CSV file is “/trend/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 CSV file saved to the external memory. The users can change the
default subfolder name of Data History component by themselves to “History Data”, that of
Data Log component to “History Trend” and that of XY Graph to “XY_CHART”.
Storage Type Daily File Stores the sampling data by day and records them into the CSV file
named in “yyyy mmdd” form.
Single File Stores the sampling data by the number of records and records them
into the CSV file with the name of “Subfolder Name”.
Buffer Storage Provides a kind of buffer storage mechanism. When the data written into the external memory
amounts to the set size of the buffers, the writing is only performed once. “Default” means no
buffering, i.e. the writing operation will immediately be performed once the data is generated.
Storage Period Sets the upper limit for the storage amount of data 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; if the archived records are reached to the Storage Period, the
storage will not be continued. (yyyymmdd refers to the execution date.)
Indirect
Subfolder
Reference
Sets the name of subfolder read from the specified memory with the word length up to 16.
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