Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 65

(d) When using AnS/A series compatible extension base units
When using the Q5B/Q6B in combination with the AnS/A series compatible extension base units,
QA1S5B, QA1S6B, and QA6B, take the following precautions.
• Connect the extension base units in the order of the Q5B/Q6B, QA1S5B/QA1S6B, QA6B from
the closest position to the main base unit.
• The QA1S51B does not have an extension cable connector (OUT) and therefore cannot be used in
combination with the QA6B.
• Batch-assign I/O numbers of the modules mounted on the base units for each series: Q series  A series
or Aseries  Q series. Failure to do so will result in "SP.UNITLAY ERR.".
When the QA6ADP+A1S5B/A1S6B is used, refer to the following.
QA6ADP QA Conversion Adapter Module User's Manual
When the QA1S6ADP+A1S5B/A1S6B is used, refer to the following.
QA1S6ADP Q-AnS Base Unit Conversion Adapter User's Manual
QA1S6ADP-S1 Q-AnS Base Unit Conversion Adapter User's Manual
CHAPTER 2 APPLICATION OF PROGRAMMING
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