Rockwell Automation 1336T Function Block Prog. Manual, Series A/B - Manual (Page 121)

5–5 Block Transfer Services
1336 FORCE — 5.9 August 1995
Example
In this example, an Event List Checksum message has been sent to
the drive.
1 0
N10:10
2 3 4 5 6 7 8 9
N10:90
BTW
Data File
BTR
Data File
Data Format
0
0 28C3
0
0
0F03
0F03 0A4A
BRAM
Checksum
RAM
Checksum
Notice that the BRAM checksum and the RAM checksum are
different. This indicates that the application that is currently
executing in the drive is not the same as the application that is stored
in BRAM.
If you perform a function block BRAM Store operation and then
perform another checksum read, the results would look like the
following:
1 0
N10:10
2 3 4 5 6 7 8 9
N10:90
BTW
Data File
BTR
Data File
Data Format
0
0 0A4A
0
0
0F03
0F03 0A4A
BRAM
Checksum
RAM
Checksum
Event List Checksum
(continued)