Rockwell Automation 1329I DeviceNet Option FRN 1.XXX - Manual (Page 39)

Chapter
5
Using I/O Messaging
This chapter provides information about using control I/O. It includes
information on the following:
Important: To use control I/O, you must have already configured the 1329I
unit and DeviceNet option ( Chapter 3 ) and scanner ( Chapter 4 ).
Understanding I/O
Messaging and Assemblies On DeviceNet, I/O messaging, sometimes called implicit messaging, is used
to transfer the I/O data, which controls the 1329I unit and its speed.
The control I/O messages that are transmitted between the scanner and
1329I unit depend on the output assembly and input assembly that you
select. You can choose between various input and output assemblies,
thereby choosing the data format of the control I/O messages. The
assemblies that are supported are numbered and are part of a DeviceNet
defined “Motor Control Hierarchy.” This feature lets you use a 1329I unit to
replace motor starters or contactors on a network without the need to
reprogram the scanner.
You select the output assembly using Parameter 107 - [Output Assembly]
and the input assembly using Parameter 108 - [Input Assembly]. These
parameters are described in the
Parameter List section in Appendix B . Data
formats for assemblies are in the Class Code 0x04 – Assembly Object
section in Appendix C .
Topic Page
Understanding I/O Messaging and Assemblies 5-1
Example of I/O Messaging 5-2
Example SLC Ladder Logic Program 5-3