Factory Automation

Programmable Controllers MELSEC-A Series Renewal

Replace with the Q Series CPU module while keeping the existing modules

QA Extension Base Unit (QA1S51B)

Supported series: AnS/QnAS

Replace the AnS/QnAS Series CPU with the Q Series CPU while keeping the existing AnS/QnAS Series modules

Gradual transition from the AnS/QnAS Series to the Q Series (Q mode)

*1.The Universal model QCPU of which first 5-digit serial number is 13102 or later, is compatible with the base units.

Reduce conversion effort by using the same I/O addresses

Note:Assign the I/O numbers in the following order: Q Series to AnS/QnAS Series or AnS/QnAS Series to Q Series.
When the order is mixed (i.e., Q Series → AnS/QnAS Series → Q Series), an error will occur in the CPU.

Example of I/O assignment

    Model Type Point Address
Main
base
unit
0 QJ61BT11N Intelli. 32 100
1 QJ71LP21-25 Intelli. 32 120
2 QX41 Input 32 140
3 QX41 Input 32 160
4 QY41P Output 32 180
    Model Type Point Address
Extension
base
unit
5 A1SX41 Input 32 00
6 A1SY41P Output 32 20
7 - Empty 32 40
8 - Empty 32 60
9 A1SX41 Input 32 80

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