Whether the terminal block is removable or not differs depending on the series. Types of the terminal blocks for the MELSEC-F series main units are as follows.
Note that when replacing a terminal block with another terminal block, they need to be the same model.
・ FX1S/3S series: Not removable
・ FX1N/FX3G series: Removable
・ FX2N/FX3U series: Removable except for 16-pin terminal block