Mitsubishi Electric MELSEC FX2N-64CL-M, Руководство пользователя

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Assignment of I/O Nos. 8
8-1
8. Assignment of I/O Nos.
The FX
2N
-64CL-M assigns I/O information for remote I/O units to devices X (input) and Y
(output) in the PLC.
The I/O Nos. are assigned in CONFIG mode.
At this time, the I/O Nos. are assigned in octal serial Nos. following the I/O No. occupied by the
PLC while eight points are handled as one block.
(For further details, refer to "8.2 Example of I/O No. assignment")
For a station No. to which a remote I/O unit will be connected to in the future, the I/O No. 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 No. and point mode
The I/O No. is equivalent between the 4-point mode and 16-point mode, but the station No. of
each remote station is different between 4-point mode and 16-point mode.
When using remote I/O units of more than 4 I/O points, more I/O points can be used if the 16-
point mode is selected due to the restriction in the number of connected stations
(64 stations maximum).
Example:When sixty-three CL1XY2-DT1D5S units (cable type remote unit having 1 input point
and 1 output point) (station No.: 1 to 63) and one CL2X8-D1B2 unit (terminal block
type remote I/O unit having 8 input points) are to be connected to the FX
2N
-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 of the link scan, refer to "9. Data Link Processing Time".)
1) When connecting all remote I/O units and assigning their I/O Nos., refer to "8.3 Automatic
I/O No. assignment".
2) When assigning the I/O Nos. without connecting remote I/O units and preparing a sequence
program or connecting additional remote I/O units in the future, refer to "8.3 Automatic I/O
No. assignment" and "8.4 Specification of reserved station" and "8.5 Edition of detailed
remote station information".
• In CONFIG mode, the FX
2N
-64CL-M does not occupy I/O points for remote stations.
(It occupies only 8 points as a special block.)
I/O extension blocks/units of the PLC connected after the FX
2N
-64CL-M do not operate.
FX2N-64CL-M CC-Link/LT Master Block