Rockwell Automation GMLC Reference Manual - Manual (Page 774)

Publication GMLC-5.2 - November 1999
Using Block Transfers 737
If the PLC is getting data from the motion controller, no item values need
be specified in the BTW data file and thus the end-of-block delimiter is
word 3 (nn = 0). The returned data is stored in the integer (N) file
specified in the BTR. After completing the BTR, this file contains the
returned values, as shown in the following table.
RIO Adapter Block Transfer Write Word-Swapped 32-bit Floating-Point Data File Format
Word Description
0
1
2 Data Type
First Data Item
Number and Format of Items: 70
nn
3
4 First Data Item Value Least Significant Word
First Data Item Value Most Significant Word
5
6 Second Data Item Value Least Significant Word
Second Data Item Value Most Significant Word
2 nn+1
2 nn+2
Last Data Item Value Least Significant Word
Last Data Item Value Most Significant Word
2 nn+3 End-of-Block Delimiter (000D hex)