Rockwell Automation 22-COMM-E EtherNet/IP Adapter - Manual (Page 46)

5-2 Using I/O Messaging
The terms input and output are defined from the scanner’s point of view.
Therefore, Output I/O is data that is produced by the scanner and
consumed by the EtherNet/IP adapter. Input I/O is status data that is
produced by the adapter and consumed as input by the scanner. The I/O
image table will vary based on the:
• Configuration of the Operating Mode Switch (SW1) on the adapter
and (Parameter 22 - [DSI I/O Cfg]). The image table always uses
consecutive words starting at word 0.
Figure 5.1 illustrates an example of a Single drive I/O image (16-bit words).
Figure 5.1 Single Drive Example of I/O Image
Single mode is the typical configuration, where one node consists of a
PowerFlex 40 drive with a 22-COMM-E adapter.
For Multi-Drive mode, where one node can consist of up to 5 drives,
refer to
Chapter 7 , Using Multi-Drive Mode .
When enabled, the Logic Command/Status word is always word 0 in the
I/O image. The Logic Command is a 16-bit word of control produced by
the scanner and consumed by the adapter. The Logic Status is a 16-bit
word of status produced by the adapter 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.
Understanding the I/O Image
Controller Scanner Adapter
Word and I/O
PowerFlex 40 Drive
EtherNet/IP DSI
Output
Image
(Write)
Input
Image
(Read)
Message
Handler
Message
Buffer
0 Logic Status
1 Feedback Logic Status
Feedback
Message
Handler
0 Logic Command
1 Reference Logic Command
Reference
Using Logic Command/Status