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FX2N-64CL-M CC-Link/LT Master Block
8.
Assignment of I/O numbers
The FX
-64CL-M assigns I/O information for remote I/O modules to devices X (input) and Y
2N
(output) in the PLC.
The I/O numbers are assigned in CONFIG mode.
At this time, the I/O numbers are assigned in octal serial numbers following the I/O number
occupied by the PLC while eight points are handled as one block.
(For further details, refer to "8.2 Example of I/O number assignment")
For a station number to which a remote module will be connected to in the future, the I/O
number can be secured by "specifying it as a reserved station" and "editing the detailed remote
station information on it".
8.1
Relationship between I/O number and point mode
The I/O number is equivalent between the 4-point mode and 16-point mode, but the station
number of each remote station is different between 4-point mode and 16-point mode.
For the remote module with 4 I/O points or more, more I/O points are available with the 16-
point mode since a maximum of 64 remote stations are connectable.
Example:When sixty-three CL1XY2-DT1D5S units (cable type remote unit having 1 input point
and 1 output point) (station number: 1 to 63) and one CL2X8-D1B2 unit (terminal
block type remote I/O module having 8 input points) are to be connected to the FX
16MR, a system can be constructed in the 16-point mode, but cannot be constructed
in the 4-point mode due to the CL2X8-D1B2 unit occupying two stations and the
number of remote stations exceeds 64.
However, if the number of stations is equivalent, the link scan time is longer in the 16-point
mode than in the 4-point mode.
(For further details on the link scan, refer to "9. Data Link Processing Time".)
1) When connecting all remote modules and assigning their I/O numbers, refer to "8.3
Automatic
I/O number assignment".
2) When assigning the I/O numbers without connecting remote modules and preparing a
sequence program or connecting additional remote modules in the future, refer to "8.3
Automatic I/O number assignment" and "8.4 Specification of reserved station" and "8.5
Edition of detailed remote station information".
• In CONFIG mode, the FX
(It occupies only 8 points as a special block.)
Extension blocks/units of the PLC connected after the FX
-64CL-M does not occupy I/O points for remote stations.
2N
Assignment of I/O numbers 8
-64CL-M do not operate.
2N
8-1
-
2N
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