Allen-Bradley PowerFlex 20-COMM-P FRN 1 Series User Manual page 53

An image that uses 32-bit words for Reference and Datalinks would
change the I/O image in
Word I/O
0 Logic Command/Status
1 - 2 Reference/Feedback
3 - 6 Datalink A
Figure 5.2 illustrates an example of an I/O image that does not use all of
the I/O data. Only the Logic Command/Reference and Datalink B are
enabled. In this example, the Reference is a 32-bit word, and Datalinks
are 16-bit words.
Figure 5.2 Example I/O Image with Only Logic/Reference and Datalink B Enabled
Controller Scanner
Output
Image
(Write)
Input
Image
(Read)
LSW = Least Significant Word (Bits 15 - 0)
MSW = Most Significant Word (Bits 31 - 16)
Figure 5.1 as follows:
PROFIBUS
Adapter
Word and I/O
0 Logic Command
1 Reference (LSW)
2 Reference (MSW)
3 Datalink In B1
4 Datalink In B2
0 Logic Status
1 Feedback (LSW)
2 Feedback (MSW)
3 Datalink Out B1
4 Datalink Out B2
Using I/O Messaging
Word I/O
7 - 10 Datalink B
11 - 14 Datalink C
15 - 18 Datalink D
DPI
PowerFlex Drive
Logic Command
Reference
Data In A1
Data In A2
Data In B1
Data In B2
Data In C1
Data In C2
Data In D1
Data In D2
Logic Status
Feedback
Data Out A1
Data Out A2
Data Out B1
Data Out B2
Data Out C1
Data Out C2
Data Out D1
Data Out D2
5-3