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7-4
Using Multi-Drive Mode
Understanding the I/O Image
The terms input and output are defined from the scanner's point of view.
Therefore, Output I/O is data that is output from 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 7.5
Figure 7.5 Multi-Drive Example of I/O Image
Controller
Note: If a daisy-chained drive is disconnected from the RS-485 (DSI)
network or powered down, the Logic Status and Feedback words for the
affected drive will be set to 0.
illustrates the Multi-Drive I/O image with 16-bit words.
EtherNet/IP
Scanner
Output
Image
(Write)
Input
Image
(Read)
Message
Handler
Adapter
Word and I/O
0 Logic Command
1 Reference
2 Logic Command
3 Reference
4 Logic Command
5 Reference
6 Logic Command
7 Reference
8 Logic Command
9 Reference
0 Logic Status
1 Feedback
2 Logic Status
3 Feedback
4 Logic Status
5 Feedback
6 Logic Status
7 Feedback
8 Logic Status
9 Feedback
Message
Buffer
DSI
PowerFlex Drive 0
PowerFlex Drive 1
PowerFlex Drive 2
PowerFlex Drive 3
PowerFlex Drive 4
PowerFlex Drive 0
PowerFlex Drive 1
PowerFlex Drive 2
PowerFlex Drive 3
PowerFlex Drive 4
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