Rockwell Automation 1203-EN1 EtherNet/IP-to-SCANport Module - Manual (Page 55)

Using I/O Messaging 5-3
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.
Figure 5.2 Example I/O Image with Only Logic/Reference and Datalink B Enabled
When enabled, the Logic Command is word 0 in the output image and
the Logic Status is word 2 in the input image. The Logic Command is a
16-bit word of control produced by the scanner and consumed by the
module. The Logic Status is a 16-bit word of status produced by the
module and consumed by the scanner.
This manual contains the bit definitions for compatible products
available at the time of publication in
Appendix D , Logic Command/
Status Words . For other products, refer to their documentation.
Controller
EtherNet/IP
Scanner
SCANport
Adapter
Word and I/O
Output
Image
(Write)
Input
Image
(Read)
0 Logic Command
1 Reference
2 Datalink B1
3 Datalink B2
0 Pad Word
(1)
1 Pad Word
(1)
2 Logic Status
3 Feedback
4 Datalink B1
5 Datalink B2
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
Drive
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
(1)
Required by ControlLogix. May or may not be required by other controllers.
Using Logic Command/Status