Rockwell Automation AutoMax Enhanced Ladder Editor - Manual (Page 86)

FĆ2
The Editor creates a log file if any conversion error or warning messages are
generated. See Correcting Ladder Program Conversion Warnings and Errors"
in this Appendix.
Once the Editor converts the program, it renames the original program file to
file.@PC and renames the original remark file.REM to file.@RE. You can delete
these files later if you wish.
F.1 About How Shift Instructions Are
Converted into the Ladder Editor
Any shift register instructions present in the old ladder program are converted to
a Shift Right (SR) instruction. The logic that drives the SHIFT and DATA
parameters is converted to correspond with the SR instruction's EN and BIT
parameters, respectively. The following table describes how other conditions are
handled.
If the: Then:
old instruction had a shift register
length that is less than 16
The shift register length for the
corresponding SR instruction is 16 (an
integer). Note that all the bits within the
integer are shifted. A message is posted
in the file UPDATE.LOG or
program_name.LOG.
RESET input parameter was
programmed in the old instruction
A MOVE block is added to the rung. This
block is driven by the logic that was
connected to the RESET parameter.
The MOVE instruction resets the shift
register integer when the reset coil is true.
DATA and SHIFT parameters
were not programmed in the old
instruction
The rung is converted into a MOVE
instruction and a warning is posted in the
file UPDATE.LOG or program_name.LOG.