The Mitsubishi FX2N 16EX ES is a digital input extension module for the FX2N series PLC, providing 16 input points at 24 VDC, configurable for sink or source wiring. It is a DIN-rail-mounted unit that expands the I/O capacity of a base FX2N CPU.
What the Ratings Mean for Fit
The 16 input points are all digital, rated for 24 VDC sink or source — the module accepts both NPN and PNP field devices without rewiring the unit itself. This flexibility is useful when mixing sensor types on the same rail. The module draws its power from the FX2N expansion bus; no separate supply is needed, but the total backplane current budget must account for all connected modules. DIN-rail mounting means it clips into the standard 35 mm rail alongside the FX2N CPU and other extension blocks. The form factor is consistent with the FX2N series, so panel layout and wiring duct planning follow the same footprint as other FX2N I/O modules.
Application Context
Built for the FX2N series PLC, this module is used in industrial control systems for discrete input sensing — limit switches, proximity sensors, pushbuttons, and other 24 VDC digital signals. It is a standard I/O expansion block for machine control, packaging lines, and material handling systems that were originally designed around the FX2N platform.