Rockwell Automation Logix5000 Controllers Messages Programming Manual - Manual (Page 29)

Send a message to multiple controllers Chapter 3
The following table explains how to configure the message.
On this tab If you want to For this item Type or select
Configuration Read (receive) data from
the other controllers Message Type The read-type that corresponds to the other
controllers
Source Element Tag or address that contains the data in the first
controller
Number Of Elements 1
Destination Element local_array[*]
Index
0
Write (send) data to the
other controllers Message Type The write-type that corresponds to other
controllers
Source Element local_array[*]
Index 0
Number Of Elements 1
Destination Element Tag or address that contains the data in the first
controller
Communication — Path Path to the first controller
Cache Connections Clear the Cache Connections check box (more
efficient since this procedure continuously changes
the path of the message)
After the MSG instruction sends the message, the following actions occur.
1. The first ADD instruction increments the index. This lets the logic load the
configuration properties for the next controller into the MSG instruction.
2. The second ADD instruction increments the LocalIndex member of the
MSG instruction. This lets the logic load the value from the next controller
into the next element of local_array.
Configure the message
Step to the next controller
Rockwell Automation Publication 1756-PM012F-EN-P - October 2014 29