Yokogawa Electric Corporation F3BU06-0N SLT6 Rack

The Yokogawa F3BU06-0N SLT6 Rack is a 6-slot FA-M3 PLC base module that acts as the backplane and mounting platform for CPU, I/O, and expansion modules, with six total slots (excluding the power supply slot) and five usable I/O slots. It provides electrical connections and power distribution between modules within the FA-M3 system and requires an external FA-M3 power supply module, drawing approximately 50 mA at 5 V DC. As a legacy/discontinued Yokogawa component, it is commonly installed in PLC control systems, industrial control panels, manufacturing lines, and process automation systems that deploy FA-M3 controllers for machine control and I/O processing. It is a panel-mounted base unit weighing roughly 0.2–0.7 kg, and common replacements include Yokogawa F3BU04-0N (smaller slots) or F3BU09-0N / F3BU13-0N (larger racks).