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Appendix A
Data Conversion
473
Correction related to contents of numeral memory table
When the data of a conventional model is converted to the data for a new model,
the converted data requires your attention to the fact that the processing that oc-
curs if incorrect data (existence of A to F other than F at the most significant bit
position) is written to an allocated word in the host differs between a conventional
and a new model.
Difference
New models:
The written data is invalid and the existing content is
retained.
Conventional models: The incorrect data is stored.
Conversion result, error message and corrective action
Status before
Conversion
Status after
Conversion
Error Message
Corrective Action
––
––
––
Note that the display dif-
fers between a conven-
tional and a new model
if incorrect data is writ-
ten. (Refer to
7-2
Nu-
meral Memory Table
.)
Correction related to bit memory table
If a bit memory table is converted from the conventional model to the new model,
conversion will be executed in the manner shown below due to the difference of
the bit memory table function.
Difference
New models:
Alarm function and switch screen function cannot be
set simultaneously.
Conventional models: Alarm function and switch screen function can be set
simultaneously.
Conversion result, error message and corrective action
Status before
Conversion
Status after
Conversion
Error
Message
Corrective Action
[Switch screen]: OFF
[Screen No]: 0
Function: None
[Switch screen]: OFF
[Screen No]: 0
––
Change function to
[Alarm], if you want to dis-
play the alarm. (Refer to
7-4
Bit Memory Table
.)
[Switch screen]: OFF
[Screen No]: As desired
Function: Alarm
[Switch screen]: ON
[Screen No]: As desired
––
Correction is not neces-
sary.
[Switch screen]: OFF
[Screen No]: 0
Function: Alarm
[Switch screen]: ON
[Screen No]: 9999
––
Correction is not neces-
sary.
[Switch screen]: ON
[Screen No]: As desired
Function: Alarm
[Switch screen]: ON
[Screen No]: As desired
––
Change the function to
[Switch screen]. (Refer to
7-4 Bit Memory Table
.)
Correction related to extended I/O input/output table
When an extended I/O input/output table is converted, the data is converted in
the manner shown below due to differences in the handling of an extended I/O
input/output table between NT30/NT30C and other models.
Difference
NT30/NT30C:
Extended I/O input/output table can be used.
Other models:
Extended I/O input/output table cannot be used.
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