Key Features & Specifications
1. Basic Specifications
Model: FX3G-40MT/ESS

Series: Mitsubishi FX3G Series (entry-level, compact PLC)

I/O Configuration: 24 inputs (X0-X27) + 16 outputs (Y0-Y17)

Output Type: Transistor (sink/source) – MT model (for high-speed switching)

Power Supply: 100-240V AC (50/60Hz) – ESS model

Program Memory: 32K steps (expandable with memory cards)

Processing Speed: 0.21 µs per basic instruction

2. Communication & Expansion
Built-in RS-422/RS-485 port (for programming & communication)

Supports communication protocols:

Modbus RTU (Master/Slave)

N:N Network (FX PLC networking)

Computer link (MELSEC protocol)

Expansion Capability:

Supports FX Series expansion modules (analog I/O, communication, etc.)

Max I/O Expansion: Up to 256 points (with additional modules)

3. Programming & Software
Programmed using GX Works2 or GX Works3 (Mitsubishi’s PLC software)

Supports ladder logic (LD), instruction list (IL), and structured text (ST)

Built-in high-speed counters & pulse outputs (for motion control)

4. Special Functions
High-speed processing:

4x 100kHz high-speed counters

2x 100kHz pulse outputs (Y0, Y1) (for stepper/servo motor control)

PID control (for analog process regulation)

Real-time clock (RTC) (optional with battery)

5. Protection & Diagnostics
Self-diagnostics (monitors CPU status, battery life, and I/O errors)

Password protection (for program security)

Battery backup (optional FX3G-32BL) for memory retention