User Manual Owner's manual

Rockwell Automation Publication 440R-UM009B-EN-P - February 2014 29
Chapter 4
Automation Controller Communications
Overview
This chapter describes and gives examples of how each type of EtherNet/IP
messaging, I/O messaging and Explicit messaging, is used.
Ethernet Messaging
The Guardmaster EtherNet/IP network interface supports two types of
EtherNet/IP messaging.
• I/O Messaging – Used for deterministic EtherNet/IP communications
with ControlLogix®, CompactLogix™, SoftLogix™, and EtherNet/IP
scanners. Its primary use is to read and write I/O data for control purposes.
• Logic Explicit Messaging – Used for non-deterministic communications
in which data is not critical for control. Logic explicit messages have a
lower priority compared to I/O messages and are used to read and write
non-critical data.
I/O Messaging
RSLogix™ 5000 software is used to configure I/O messaging between an
automation controller and a Guardmaster EtherNet/IP network interface on an
EtherNet/IP network.
The following example provides the steps necessary to configure a Logix
controller for I/O messaging.
Logix Configuration
An Add-on Profile is available for the Guardmaster EtherNet/IP network
inferface and can be used with RSLogix 5000 version 19 and higher. The profile
can be downloaded from:
http://support.rockwellautomation.com/controlflash/LogixProfiler.asp
Topic Page
Ethernet Messaging
29
I/O Messaging 29
Logix Configuration 29
EtherNet/IP Network Configuration with Add-on Profiles 30
Accessing Module Data with Add-on Profiles 32
Explicit Messaging 33