Mitsubishi Melsec-Q Series User Manual page 248

(c) When connector pins are connectd in more than 2 positions, or no pin is used
The extension base unit cannot be used when connector pins for base number setting are inserted in more
than two positions and when not using any connector pin.
Main base unit
Q312B
Power supply
module
Extension base unit
Q68B
Q68B
Figure 10.34 Connector pins are used in 2 positions, and not using any connector pin
10 - 34
CPU 0 1 2 3 4 5
CPU module
6 7 8 9 10 11
Extension 1
Connector pins must not be
inserted in 2 or more positions!
Extension 2
Connector pin must be inserted!
Slot number