Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 90)

90 Publication 1404-UM001F-EN-P - November 2009
Chapter 4 Communication
I/O Type Communication
Powermonitor 3000 units with optional remote I/O, EtherNet/IP,
ControlNet, and DeviceNet communication provide I/O type (implicit)
messaging.
Remote I/O units emulate a logical quarter rack on the I/O channel.
The corresponding, two-word output and input image table elements
are automatically scanned by the I/O scanner, and the data points
they contain are available for use in the logic program of the
controller associated with the I/O scanner.
In DeviceNet units, Instances 1 and 2 comprise the DeviceNet polled,
change-of-state or cyclic connections. The default input table contains
6 integer typed elements and the output table contains two integer
typed elements. You may configure instance 1.
Refer to the User-configured I/O Table discussion on page 122 .
In EtherNet/IP and ControlNet units, Instances 1 and 2 comprise the
Class 1 connection. As in DeviceNet units, Instance 1 contains 6
integer elements of input data and Instance 2 contains 2 integer
elements of output data. You may configure Instance 1.
See the Remote I/O, DeviceNet, EtherNet/IP and ControlNet I/O
Messaging Parameters table on
page 191 for the content and format of
the I/O messaging data tables.
Data Messaging-
application Considerations The power monitor supports a number of different communication
networks and protocols. Each of these has unique characteristics and
methods. The information in this section is provided to assist you in
designing and implementing data messaging with the power monitor
by discussing in detail the unique properties of the communication
options.
Refer also to the Sample ladder diagrams in Appendix C .