Chapter 9 359
Test Sequencing
Storing and Retrieving Logged Data
Storing and Retrieving Logged Data
This exercise shows how to use the To/From File objects and To/From
DataSet
objects.
Lab 9-4: Using the To/From File Objects with Logged
Data
1. Open the seqdat2 file and delete the data line to the display.
2. Select
Flow ⇒ Repeat ⇒ For Count and place it to the left of the
Sequencer. Change the For Count number to 3, and connect its data
output pin to the sequence input pin on the
Sequencer.
3. Enlarge the work area vertically and place the
AlphaNumeric display
near the bottom. Select
Data ⇒ Collector and place it in the left
work area. Connect the
Sequencer Log pin to the Collector data
input pin. Connect the
For Count sequence output pin to the
Collector XEQ pin.
The
Collector will create an array of records of records from the
Sequencer. Using the WRITE CONTAINER transaction in the To File
object you can write any VEE data container to a file quite easily.
4. Select
I/O ⇒ To ⇒ File and place it to the right of the Collector.
Select
I/O ⇒ From ⇒ File and place it below the To File object.
Add an input terminal to the
To File object and connect the
Collector output to it. Connect the To File sequence output to the
From File sequence input pin. Connect the From File data output to
the display.
Check
Clear File At PreRun & Open in To File, and configure a
WRITE CONTAINER a transaction. Configure a transaction in the From
File
object like the following: READ CONTAINER x.
You can use the default data file for storage.
5. Run the program. It should look like Figure 9-16.
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