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causes the MSG instruction to automatically retrigger itself when it
completes. While this is acceptable for the purposes of this example,
it can produce high network utilization. In actual practice, it may be
desirable to incorporate additional logic elements to allow triggering
the MSG instruction at a specific rate or under specific conditions.
7)
The program is now complete. Refer to Figure 95.
8)
Save, download, and run the program.
a)
To view the registers being read from the interface card, double-click
the data file N18 under "Data Files" in the controller organizer view.
25 register values starting at register #11 are being continuously read
from the interface card and placed in the 25 sequential offsets of N18
starting at N18:11. Refer to Figure 96. We can see that N18:11
(deceleration time #1) has a value of 100 (10.0s), N18:12 (maximum
frequency) has a value of 6000 (60.00Hz), etc.
Figure 96: Monitoring the Data Being Read from the Drive
Figure 95: Completed PLC Program
91
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