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6 PARAMETER SETTING
MELSEC-QnA
(3) Internal memory
Data link is executed using the parameter information stored in the internal
memory.
When the module power is turned off, the parameters are erased.
Programmable controller CPU
SET YnA
Master station
Buffer memory
The parameters
area erased
when the power
is turned off.
Parameters are
not erased even
if the power is
turned off.
Data link is
executed using
these parameter
information.
Parameter
information area
Internal memory
TO
SET Yn8
SET Yn6
2
E
PROM
POINT
"Data link by buffer-memory parameters" is recommended for starting system debugging, and
"data link by E
2
PROM parameters" is recommended for the operation after debugging.
Therefore, the number of steps in the operation program can be reduced (thus, shortens the
scan time).