Use Ans (Small Type) I/O Modules As Spare Parts For A (Large Type) Input/Output Modules - Mitsubishi Electric Artisan MELSEC-Q Series Manual

6.1 Use AnS (Small Type) modules as spare parts for existing A (Large Type) Series modules

6.1.1 Use AnS (Small Type) I/O modules as spare parts for A (Large Type) input/output modules

Solution and Benefit
• If the A (Large Type) I/O module malfunctions but replacement is not available, the AnS (Small
Type) I/O module can be installed and used as a spare part, allowing the system to recover
quickly.
• If the A (Large Type) I/O module is not available when the system requires an additional I/O
module, the AnS (Small Type) I/O module can be installed and used as a spare part.
(1) System configuration example
Current configuration
A35B
After replacement
A35B
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Module to be replaced
Replace
Connector connection
123
A-A1S module
conversion adapter
A1SX42