Mitsubishi Electric MELSEC-Q00U(J)CPU

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CHAPTER 2 APPLICATION OF PROGRAMMING
2
2.2 Base Unit Assignment 2.2.1 Base mode
(b) Setting the number of slots smaller than the actual one
Set the smaller number than the actual number of slots when slots with no module mounted need not be
recognized.
Ex.
Four slots from the right end of the base unit will be the prohibited slots when using a 12-slot base unit
and setting the number of available slots to eight. (Mounting a module on a prohibited slot causes
"SP.UNIT LAY ERR.".)
CPU 0 1 2 3 4 5 6 7 8 9 10 11
Q312B
Main base unit
Power supply
module
CPU module
Number of slots set
Mounting a module will result in an error.
Slot number
Actual number of slots
Prohibited Prohibited Prohibited Prohibited