Section 2 NS Series Functions 2-15 Data Logs
2-342
NS Series Programming Manual
No. Setting Details
Graph display
position
Makes the settings for display refresh.
Position end
of scrolling
at the center
of data log
graph
Select to scroll when a log graph has reached the center of the time axis.
Setting Ad-
dress for
Updating
Display
When setting the address for display refresh, check Setting Address for Updating Dis-
play, then press the
Set Button.
Scroll Con-
trol Flag
Sets the address for updating display under the
Set Button. If the bit specified here
turns from OFF to ON, the graph display is scrolled for the amount of time specified by
the contents of the address specified under
Address for specifying Scroll interval.
Once the display has been scrolled, the address for updating display will automatically
turn OFF. Turn ON the address to update the graph at any time.
6
Address for
Specifying
Scroll
interval
Sets the address for specifying scroll interval under the Set Button.
When the Refresh notification address turns ON, the graph display is scrolled for the
amount of time specified here. The amount of time is specified in binary format. The
graph will not be scrolled if 0 is specified.
Seconds, minutes, or hours can be selected as the unit of time.
A
A
Example: When
No. of scroll seconds set to 10
Refresh
notification
address
Scrolls the graph by 10
seconds’ worth of display.
ON
N
N
N
o
o
o
t
t
t
e
e
e
♦
If the clock is changed during PT operation, the time will no longer match the time that has been
displayed up to that point so graphs will not be displayed correctly. In such cases, clear the log by
using the Log Clear icon on the data log graph or initializing the data under the System Menu.
♦
If Save with Ring Buffer is selected for the data log save format, data will be deleted in order from
the oldest data when the number of logged data items reaches the set number of log points. Some-
times this means that the oldest graph data will have already been deleted when the graph is
scrolled when the address for updating display turns ON. For example, if the display direction has
been set to
Left, the data displayed at the left of the graph may have already been deleted. In this
situation, the graph display is also refreshed when the address for updating display turns OFF and
the data registered at that time is displayed on the graph.
♦
If frames are switched frequently, the display update may take some time and communications may
be delayed. This means that sometimes data is not logged.
♦
The data format (BCD or binary) for Transmit Time Data To is set by selecting PT – Project
Properties
and using the Data Format Tab Page.
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