The Mitsubishi QA1S65B is a 5-slot backplane base unit for the Q-series programmable controller. It mounts up to five expansion modules—I/O, analog, network, or positioning—securing them mechanically and carrying the bus between the CPU and each added card. Rated slot count is the key selection parameter: five slots define the maximum module population for that rack. For systems needing more, a second base unit with an extension cable is required.
Sourcing
This base unit carries a mature lifecycle stage.