Utilize Existing A (Large Type) And Ans (Small Type) Modules Without Changing I/O Addresses - Mitsubishi Electric Artisan MELSEC-Q Series Manual

3.3 Utilize existing A (Large Type) and AnS (Small Type) modules without changing I/O addresses

3.3 Utilize existing A (Large Type) and AnS (Small Type) modules without
changing I/O addresses
Solution and Benefit
• The I/O addresses do not need to be changed when reutilizing existing A (Large Type) and AnS
(Small Type) modules with Q Series CPU and mounting the modules on QA6 B/A6 B＋QA6ADP
or QA1S6 B. This can greatly reduce program modification time.
• The A (Large Type) and AnS (Small Type) modules can be used with the same I/O addresses, so
there is no need to change the external wiring numbers.
The following is an example of how to reuse the program without modifying the I/O addresses when replacing the
CPU with a Q Series CPU and keeping the existing I/O modules on a QA extension base unit.
(1) I/O assignment example
When utilizing existing A (Large Type) and AnS (Small Type) modules with the Q Series CPU, set the existing
module's I/O addresses to the existing addresses with the PC parameter I/O assignment settings. Assign the
addresses for the modules mounted onto the main base unit after the existing module. This will greatly reduce
program modification time.
● System configuration example (same as in 3.1.1)
Current configuration
A38B
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After replacement
Q35B
Replace
QA68B
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