Chapter 9 Communication instructions
222 Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
This section provides specific details and examples for using communication
instructions in logic programs. See the following topics for details of and examples
for using the MSG_CIPGENERIC and MSG_CIPSYMBOLIC function blocks
to create programs.
Configuring object data values for explicit messaging on page 222
Example: How to create a MSG_CIPGENERIC messaging program to read
data from a controller on page 225
Example: How to create a MSG_CIPSYMBOLIC messaging program to
write a value to a variable on page 238
Example: How to configure Modbus communication to read from and write
to a drive on page 251
Configuring object data values for explicit messaging
(MSG_CIPGENERIC)
To use the MSG_CIPGENERIC function block for explicit messaging, you will
need to configure the AppCfg parameter with the correct values.
For additional information about message communication
There are several sources of information covering the implementation and use of
message communication, including Connected Components Workbench Help,
user manuals and the Rockwell Automation Literature Library.
Information sources for message communication
The following table lists additional sources of information relevant to message
communication.
Information source Description How to find the information
User manual for your specific communication
device
Contains important information about messaging and
specific information for configuring message function
blocks.
Connected Components Workbench Help
menu
EtherNet/IP Adapter 22-COMM-E FRN 1.xxx,
Appendix C
Provides information about the EtherNet/IP objects that
can be accessed using Explicit Messages.
Connected Components Workbench Help
menu
EtherNet/IP specification Defines the objects to be included in every CIP device:
Identity object, Messsage Router object and the Network
object.
ODVA web site (http://www.odva.org)
Micro800 Programmable Controllers: Getting
Started with CIP Client Messaging
Provides quickstart instructions for using CIP GENERIC and
CIP Symbolic Messaging in Micro830 and Micro850
programmable logic controllers (PLC).
Rockwell Automation Literature Library
(message) function blocks
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