Rockwell Automation 1761-NET-DNI DeviceNet Interface (DNI) - Manual (Page 31)

Publication 1761-UM005B-EN-P - October 2006
DNI Configuration Parameters and Programming Notes 31
Organization of Input Data
The following diagram describes how the Split Point parameter affects
the data in the DF1 Device. The split point represents the last word of
the Master data. Words above the split point are Explicit data.
Organization of Input Data
Input Split Point Example
We need 4 (3.5 data + 0.5 status) words of slave data that the master
will own, and we need to configure an additional 15 words so that
other DeviceNet products can read data.
• Input Size = 19
• Input Split Point = 4
DNI Device
Explicit\
Input
Assembly
Master
Input
Assembly
DF1 Device
most significant word
Explicit
Inputs
least significant word
most significant word
Master’s
Inputs
least significant word
Higher
Addresses
Input
File
Size
Lower
Addresses
Split
Point