Rockwell Automation Publication 193-UM014C-EN-P - August 2016 71
Automation Controller Communication Chapter 7
1. In an integer array named MSG_Read_Request, define the number of
attributes to read and list the specific attribute numbers.
The MSG instruction returns in an integer array with the first integer
representing the following information:
•number of attributes
• first attribute number being returned
• first attribute number data status
•first attribute data…
•last attribute number being returned
• last attribute number data status
•last attribute data
In the screen capture below, the user-defined structure listing the
integers is being returned in this example.