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FX2N-16CCL-M CC-Link System Master Block
7.
Parameter Setting
This chapter describes the parameter setting required to execute data link in the CC-Link
system.
7.1
Procedure from Parameter Setting to Data Link Startup
This section describes the flow from parameter setting to data link startup.
7.1.1
Relationship among buffer memory, EEPROM and internal memory
This section describes the relationship among the buffer memory, the EEPROM and the
internal memory in the master station.
1) Buffer memory
This is a temporary storage area to write the parameter information to the EEPROM or the
internal memory.
Write the parameter information to the buffer memory using a sequence program.
(When the power of the master block is turned off, the parameter information is erased.)
2) EEPROM
Only by setting to ON the write request for data link startup by EEPROM parameters
(BFM#A
H
This eliminates the necessity to write parameters to the buffer memory every time the
master station starts up.
However, the parameter should be registered in advance to the EEPROM by the write
request for parameter registration to EEPROM (BFM#A
Even when the power of the master block is turned off, the parameter information stored in
the EEPROM remains stored.
The registration limit to the EEPROM is 10,000 times.
3) Internal memory
Data link is executed using the parameter information stored in the internal memory.
When the power of the master block is turned off, the parameter information is erased.
b8), data link can be started up.
PLC
SET
M
BFM#A
b10
H
TO
SET
M
BFM#A
b8
H
SET
M
BFM#A
b6
H
H
Master station
The parameter
information is
erased when the
power is turned off.
Buffer memory
Parameter
information area
Parameter Setting 7
b10).
The parameter
information
2
remains stored
E
PROM
even when the
power is turned off.
Data link is
executed using this
Internal memory
parameter
information.
7-1
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