Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual - Manual (Page 158)

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7.3.3 Errors Caused by the Convert From Binary Data to Integer Data Instruction
These errors can occur when you are using the BCD_TO instruction in a program. They
are logged in the error log.
If this error occurs: Then: Do the following:
The result is larger
than what Out's data
type supports.
ENO is set according
to ERROR_ENO, and
Out contains the
largest value allowed
for the data type being
used.
Specify a larger data
type for Out. For
example, use a double
integer data type
instead of a integer.
An illegal BCD digit
was found.
D Out contains the
value of 0
D ENO is set
according to
ERROR_ENO.
Use a valid BCD value
for In.