Rockwell Automation 20G PowerFlex 755 Drive Embedded EtherNet/IP Adapter User Manual
Page 35
Rockwell Automation Publication 750COM-UM001E-EN-P - October 2013
35
Configuring the Adapter
Chapter 3
Simple Peer I/O Configuration
The most common use of peer I/O is to take the Logic Command and Reference
from one drive and repeat it over Ethernet to one or more other drives. If scaling
of the Reference is needed to enable drives to run at different but related speeds,
use drive Parameter 609 - [TrmPct RefA Stpt]. The embedded EtherNet/IP
adapter provides a simplified configuration method for simple peer I/O.
Follow these steps to set up the master (broadcast) side of simple peer I/O.
1.
Set Parameters 89 - [To Peer Period] and 90 - [To Peer Skip] as desired
for your application.
Parameter 89 controls how frequently the adapter will transmit data when
it is changing. Parameter 90 controls how frequently the adapter will
transmit data when it is not changing.
2.
Set Parameter 91 - [To Peer Enable] to a value of ‘1’ (Cmd/Ref ).
Follow these steps to set up the slave (receiver) side of simple peer I/O.
1.
Set Parameter 80 - [Fr Peer Timeout] to a suitable timeout value for your
application.
This value should be greater than the product of Parameter 89 - [To Peer
Period]
and Parameter 90 - [To Peer Skip] in the transmitting drive.
2.
Set Parameters 81 - [Fr Peer Addr 1] through 84 - [Fr Peer Addr 4] to
the IP address of the drive transmitting peer I/O.
3.
In each PowerFlex 750-Series slave drive, set drive parameter 308 -
[Direction Mode] to ‘0’ (Unipolar) to ensure that it properly follows the
master drive’s speed reference and commanded direction.
4.
Set Parameter 85 - [Fr Peer Enable] to a value of ‘1’ (Cmd/Ref ).
IMPORTANT
Because of the 32-bit REAL (floating point) Reference, the following method
works only if the drives transmitting and receiving are PowerFlex 750-Series
drives. Peer-to-peer communication only works between drives with a 20-750-
ENETR option module or PowerFlex 755 drives with the embedded EtherNet/IP
adapter.
Value
Setting
0
Off (Default)
1
Cmd/Ref
2
Custom
ESC
ENTER
Stopped
0.00 Hz
AUTO
F
▲
▼
Edit To Peer Enable
Off
0
0 << 2