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6 PARAMETER SETTING
MELSEC-QnA
6
6. PARAMETER SETTING
The parameter setting necessary to perform data link with CC-Link is described.
6.1 Procedure from Parameter Setting to Data Link Startup
The flow from setting the parameters to starting the data link is described.
6.1.1 Relationship between buffer memory, E
2
PROM and internal memory
The relationship between the master station buffer memory, E
2
PROM and the internal
memory is described.
(1) Buffer memory
This is a temporary storage area to write the parameter information to E
2
PROM
or internal memory.
When the module power is turned off, the parameter information is erased.
(2) E
2
PROM
By just turning on the data-link start request by the E
2
PROM parameters (Yn8),
data link can be started.
This eliminates having to write parameters to the buffer memory every time when
starting up the master station.
However, the parameters must be stored in E
2
PROM by the parameter storage
request to E
2
PROM (YnA) beforehand.
Even when the power is turned off, the E
2
PROM parameter information will be
kept.
The registration limit to E
2
PROM is "10,000 times".