Yokogawa Data Logging Software GA10 - Manual (Page 47)

3-23
IM 04L65B01-01EN
• If the stop condition is set to Level
The setting procedure is the same as described
above.
GA10 operates in the following manner.
If the start condition is set to Alarm or Level, when
the monitored tag value reaches the threshold in the
specified direction, GA10 stops recording and enters the
recording standby state.
If the start condition is not set to Alarm or Level, when
the monitored tag value reaches the threshold in the
specified direction, GA10 stops recording.
File Division
Set the conditions for dividing data files. The settings vary
depending on the selected condition. The figure below
shows an example when Specified Period is selected.
Select Every Hour, Everyday,
Every Week, or Every Month.
Type the time. Set the conditions
for dividing.
Off
File is not divided.
Specified Duration
Based on the time of the first recorded data, the file
is divided at every specified hour and minute.
Example: If the division time is 1 hour, the time of
the first recorded data is 3:00:00, and the record
interval is 1 second, the first file will contain the data
from 3:00:00 to 3:59:59, and the second file will
contain the data from 4:00:00 to 4:59:59.
Specified Period
Select Every Hour, Everyday, Every Week, or Every
Month and the absolute time to divide the data file.
Data Number
The file is divided when the number of data values in
the data file reaches the specified number.
Note
The file is divided in the following situations.
• When the data file size exceeds 1 GB
• When the data file output format is Excel and the
number of recorded tags is 180 or less, the files will
be divided every 65535 rows.
When the number of recorded tags is 181 or more, the
files will be divided in groups of the maximum number
of rows that meets the following condition: number of
tags × number of rows < 11796428.
• When the data file output format is binary and the
number of recorded data points exceeds 10 million
This number is the number of timestamps that is
recorded and is not related to the number of tags.
Number of Files
You can limit the number of data files that are saved from
the start of recording to the end of recording. When the
number of data files reaches the limit, the oldest file is
deleted to save the most recent file.
The handling of the number of files is different when the
data time of collected data is set to PC time or Device
time.
PC time
Because the data of every device is saved in a
single file, the number of data files of one iteration
from recording start to recording stop is applicable.
Chapter 3 Configuring and Starting Data Collection and Recording
Device time
Because a file is saved for each device or each
interval, the number of data files of one iteration
from recording start to recording stop for each
device or interval is applicable.
Folder
Specify the data file save destination.
Server PC Operation System Default destination
Windows XP C:\Documents and Settings\All Users\
Documents\SMARTDAC+Data Logging
Software\Data
Windows Vista, 7, 8 C:\Users\Public\Documents\SMARTDAC+
Data Logging Software\Data
Note
We recommend you use the default setting for the data
save destination folder.
If you want to change the save destination, select a folder
that the server (Network service account) can write to.
Note that files cannot be saved to the desktop or
Document folders.
File Name
Specify the name of the data file. When recording data
using Specified Period, it is convenient to add the date
or time to the file name. The date or time of the first data
point is added to the file name.
Comment
You can attach comments to data files. You can view
these comments when you display the data in Universal
Viewer.
You can change the comments until you click Start
Recording but not afterwards.
• Differences in Data Recording When PC Time Is
Used and When Device Time Is Used
The table below summarizes the differences in the
recording files created when Data time is set to
Device time and when set to PC time.
Data Time
Influence
Specified Data Time
PC Time Device Time
Number of recording
files
One data file is created. A data file is created for
each device. Or if there
are multiple acquisition
intervals in the same
device, a data file is
created for each interval.
Alarm information Alarm information is
recorded by taking the
logical OR of the alarm
information from the
collected data immediately
after the previous recording
data point to the current
recording data point.
The data files and alarm
information are aligned.
DST (daylight saving
time) when a recording
file is displayed on the
viewer
When a recording file is
displayed on the viewer,
the time information
is displayed correctly
according to the DST.
When the DST settings on
the PC and device are the
same, the time information
is displayed correctly. If
they are not the same,
the DST information of
the device is not reflected
correctly.
When device settings
are changed during
recording
The changes are not
reflected.
Recording stops.
Changes to devices during data collection and recording:
Q11