Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual - Manual (Page 172)

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8.4 Errors Caused by Move Instructions
This section describes the possible errors for all Move instructions and those additional
errors specific to the MOVE and MVB instructions.
8.4.1 Errors Caused by All Move Instructions
These errors can occur whenyou use any move instruction. They are loged in the error
log.
If this error occurs: Then: Do the following:
The array index is negative. ENO is set according
to ERROR_ENO, and
element zero of the
array is used for the
instruction's operation.
Specify a valid array element.
The array index is too large. ENO is set according
to ERROR_ENO, and
the last element of the
array is used for the
instruction's operation.
Specify a valid array element.