Rockwell Automation 22-COMM-D DeviceNet Adapter - Manual (Page 47)

Using I/O Messaging 5-3
When enabled, Reference/Feedback begins at word 1 in the I/O image.
The Reference (16 bits) is produced by the controller and consumed by
the adapter. The Feedback (16 bits) is produced by the adapter and
consumed by the controller.
These example ladder logic programs ( Figure 5.3 – Figure 5.6 ) work
with PowerFlex 40 drives.
Functions of the Example Programs
The example programs enable an operator to perform the following
actions:
• Obtain status information from the drive.
• Use the Logic Command to control the drive (for example, start,
stop).
• Send a Reference to the drive.
Adapter Settings for the Example Programs
• Node address 1 is set using the switches.
• The adapter is configured for Single drive mode (mode jumper is set
to “Single”).
• Polled I/O was enabled during the scanner configuration.
Scanner Settings for the Example Programs
• The scanner is node 0 on the DeviceNet network.
• The scanner is in slot 1.
• The adapter I/O is mapped in word 0 and word 1.
• Data files, when used, are pointed out in the examples.
Using Reference/Feedback
Size Valid Values In I/O Image Example
16-bit -32768 to 32767 Word 1 Figure 5.1
Example Ladder Logic Programs