83
The following procedure is used to clear memory completely.
Continue
pressing
the CLR key once for
each error message
until “00000” appears
on the display
All clear
MEMORY ERR
I/O VER ERR
00000
00000MEMORY CLR?
HR CNT DM
00000MEM ALLCLR?
00000
00000MEM ALLCLR
END
Partial Clear It
is possible to retain the data in specified areas or part of the ladder program. T
o
retain
the data in the HR and AR,
TC, and/or DM areas, press the appropriate
key
after entering REC/RESET
. HR is pressed
to designate both the HR and AR
areas.
In other words, specifying that HR is to be retained will ensure that AR is
retained also. If not specified for retention, both areas will be cleared. CNT is
used for the entire TC area. The display will show those areas that will be
cleared.
It
is also possible to retain a portion of the ladder program from the beginning to a
specified address. After designating the data areas to be retained, specify the
first
program address to be cleared.
For example, to leave addresses 00000 to
00122 untouched, but to clear addresses from 00123 to the end of Program
Memory, input 00123.
The key sequence for a partial memory clear is shown below.
Both
AR and HR areas
TC area
DM area
Program Memory cleared
from designated address.
Retained if pressed
Preparation for Operation Section 4-6
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