Mitsubishi FX3U-232-BD Description Description Mitsubishi PLC, FX3U RS232C Interface module; for MELSEC FX3U Related products MITSUBISHI FR-A540-0.75K-EC Mitsubishi FX0N-65EC Mitsubishi FX2N-16EYR-ES/UL Mitsubishi FX2N-16EX-ES/UL MITSUBISHI FR-A540-15K-EC Mitsubishi FX2N-48ER-DS