Section 4 Using Functions 4-1 Application
4-7
NS Series Programming Manual
Changes in past status are displayed if required.
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Scroll button Scroll button
Suggestions
Data log graphs can display other icons in addition to the Scroll Button shown above. These icons can
control display and data registration.
Stop
Stops data sampling.
Restart/Start
Restarts/Starts stopped data sampling.
Status
Displays the status of a specified address when Start/stop data log is controlled by
an external address ON/OFF.
Log Clear
Clears the graph and starts drawing from the latest status. (Past records are held.)
Pause
Pauses graph display. (Continues data sampling.)
Write to File
Outputs logged data to a Memory Card as a CSV file.
Read File
Reads the CSV file saved on the Memory Card.
Displaying Word Contents after Scaling with Macro Function
Example: To execute the operation “Y = 2X + 3” on the contents of the PLC word (X) and dis-
play the results on a data log graph.
“Y = 2X + 3” applied to contents of
changed DM00000 and result displayed
on data log graph.
DM00000 contents changed
1. Use CX-Designer to set the following numeric expression to the word lamp macro (to change word
contents).
Expression format: READCMEM ($W0, [SerialA:DM00000], 1);
$W10 = 2 × $W0 + 3;
(To store Serial A:DM00000 to $W0 and operation result to $W10.)
2. Register $W10 in the data log settings.
3. Create and register a data log graph that will display $W10 on the screen.
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