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● Some CPU modules occupy two or more slots. When this type of CPU module is used, the second slot and after are
treated as empty slots.
In the case of a PC CPU module, for example, the right slot of the occupied two slots is treated as an empty slot having
16 points. (An empty slot occupies 16 points by default.)
For this reason, the start I/O number of the module mounted on the right of the PC CPU module will be "10
H
".
Note that the start I/O number can be changed to "00
H
" by setting "0 Point" to the number of points for the right slot of the
PC CPU module in PLC parameter ("I/O Assignment").
● The I/O numbers of the multiple CPU system can be checked on the System monitor window using a programming tool.
● In the same way as in single CPU systems, the position of I/O number "00
H
" can be changed to any slot in PLC
parameter ("I/O Assignment"). ( User's Manual (Function Explanation, Program Fundamentals) for the CPU module
used)
CPU 0 1 2
Slot number
Empty slot:
00
H to 0FH occupied
Number of
CPU modules: 3