MELSEC-F FX1 to FX3G Micro PLC Replacement Technical Bulletin

This technical bulletin provides standard alternative models for replacing discontinued MELSEC-F FX1 series micro programmable controllers with FX3G series units, based on I/O points, program capacity, and terminal shapes. It includes detailed tables for main units and extension devices, along with special notes on differences in program capacity, device assignment, and memory backup methods.