Rockwell Automation 1761-NET-DNI DeviceNet Interface (DNI) - Manual (Page 40)

Publication 1761-UM005B-EN-P - October 2006
40 DNI Configuration Parameters and Programming Notes
The sizes of compatible data files within Allen-Bradley controllers vary
based on the DFI device selected.
Controller Data Files
Controller Output Data Files File Sizes
MicroLogix 1000 Bit 32 Words
Integer 105 Words
SLC/Other MicroLogix Bit 255 Words
Integer 255 Words
PLC Bit 999 Words
Integer 999 Words
TIP
The DNI can only access files 0…254.
IMPORTANT
You must have sufficient room in the file that you
select. Make sure the Output Word Offset plus the
Output Size does not exceed the boundary of the
data file. For example, a MicroLogix 1000 controller
has 32 words in its bit file; therefore, you could not
use a Output Word Offset of 30 and a Output Size of
5 because this exceeds the file size.
IMPORTANT
If you use RSNetWorx or DeviceNet Manager to
configure/commission the DNI, it is up to the user to
select the correct values for:
• Output Size
• Output Split Point (DNI Series B only)
• Output Type
• Output Data File
• Output Word Offset
Only the DNI Configuration Software Utility
performs checks on the information entered.