Mitsubishi FX3U-J1939 Description Description Mitsubishi PLC FX Series, FX3U 1939 communication Module Related products Mitsubishi FX2N-32ER-ES/UL MITSUBISHI MDS-A-SPJ-22 Mitsubishi FX2N-16EX-ES/UL MITSUBISHI FR-A540-0.75K-EC MITSUBISHI FR-A540-15K-EC Mitsubishi FX2N-48ER-DS