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System wiring, Understanding the i/o image, System wiring understanding the i/o image – Rockwell Automation 25B PowerFlex 525 Embedded EtherNet/IP Adapter User Manual

Page 85

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Rockwell Automation Publication 520COM-UM001B-EN-E - March 2013

85

Using Multi-Drive Mode

Chapter 7

Since the RS-485 ports are used for daisy-chaining the drives, there is no
connection for a peripheral device such as a HIM or USB converter
module (1203-USB). DSI Splitter cables cannot be used to add a second
connection for a peripheral device.

System Wiring

To daisy-chain the drives of the PowerFlex 525, the AK-U0-RJ45-TB2P terminal
block connector can be used for easy installation.

The wiring diagram for using AK-U0-RJ45-TB2P terminal block connectors is
shown below.

The AK-U0-RJ45-TB2P comes with (5) terminal block connectors and (2)
terminating resistors.

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 parameters C169
[MultiDrv Sel]

and C175 [DSI I/O Cfg]. The image table always uses

consecutive words starting at word 0.

The

Multi-Drive Example of I/O Image on page 86

is an illustration of the

Multi-drive I/O image with 16-bit words.

To PowerFlex 525 with
embedded EtherNet/IP

To Drive #2

To Drive #3

To Drive #4

To Drive #5

120

Ω

, 1/4 W
resistor

120

Ω

, 1/4 W

resistor