Mitsubishi Electric MELSEC Q Series Handbook page 27

1
INTRODUCTION
Replacement procedures:
Step 1
• Mount the QCPU and a module for function expansion on the Q series main base unit. Connect the
QA1S extension base unit (QA1S6B) to the main base unit as the first extension base unit and
mount the power supply module and I/O module which are installed to the existing AnS main base
unit series on it. (Wiring change is unnecessary.) If the first extension base unit is AnS series, replace
it with QA1S extension base unit (QA1S6B). If it is A series, replace it with QA extension base unit
(QA6B). Then mount a power supply module and I/O module on the extension base unit. (Wiring
change is unnecessary.)
• Programs are automatically converted
QnAS CPU to QCPU using GX Developer.
* Some instructions are not automatically converted. In case of intelligent function module or network module, programs and
parameters need be changed.
*
by changing the programmable controller type from AnS/
1
- 11