Mitsubishi FX3U-232-BD Description Description Mitsubishi PLC, FX3U RS232C Interface module; for MELSEC FX3U Related products MITSUBISHI FR-A540-0.75K-EC MITSUBISHI FR-A540-15K-EC Mitsubishi FX2N-48ER-DS Mitsubishi FX2N-48ET-ESS/UL MITSUBISHI AJ71E71-S3 MITSUBISHI FR-A540-22K