Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 68)

Publication 1747-UM003A-EN-P
4-40
By default, the Chunk 1 Output File is the output image file for the Basic
module and the Chunk 1 Input File is the input image file for the Basic
module. You must then assign the Chunk 2 Output File as the Basic module’s
M0 file and the Chunk 2 Input File as the Basic module’s M1 file.
The size for each of these files is 64 words. The total number of words
transferred bi-directionally between the SLC processor and the Basic module
will be 72. The first 8 will be the Basic module’s I/O image and the last 64
words will be the Basic module’s M-file words. This order is determined by the
Chunk numbers. The Advanced screen should then look like the following: