MITSUBISHI FX3G-24M Programmable Controller Guarentee FX-4LC

( Brand: Mitsubishi ), ( Manufacturer Part Number: FX3G-24M ), ( Part Type: Controller ), ( Country Of Origin: Japan )

Review MITSUBISHI Programmable Controller Guarentee

The **Mitsubishi Electric FX3G-24M** and **FX-4LC** programmable logic controllers (PLCs) represent a robust and versatile solution for industrial automation, engineered to deliver high performance, reliability, and flexibility for a wide range of applications. The **FX3G-24M** is a compact, 24-input/24-output modular PLC designed for small to medium-sized control systems, offering seamless integration with Mitsubishi s extensive range of sensors, actuators, and human-machine interface (HMI) devices. Its **24 digital inputs** and **24 digital outputs**, along with support for analog I/O expansion modules, provide ample scalability for basic to moderately complex automation tasks, such as conveyor systems, packaging machinery, or simple process controls. The **FX-4LC**, a more advanced variant, builds upon this foundation with enhanced processing power, improved memory capacity, and additional communication protocols, making it ideal for applications requiring real-time data acquisition, motion control, or integration with higher-level supervisory systems like SCADA or ERP platforms.

Both controllers operate on Mitsubishi s **FX Series programming environment**, which includes the intuitive **GX Developer** software, enabling users to create, debug, and monitor ladder logic (LD), structured text (ST), function block diagrams (FBD), and other programming languages with ease. The **FX3G-24M** features a **24K-step program memory** and a **128-step data memory**, sufficient for most basic automation tasks, while the **FX-4LC** boasts a **64K-step program memory** and **256-step data memory**, along with optional **128K-step extension modules**, allowing for more complex control logic, advanced calculations, and larger data handling requirements. Both models support **Mitsubishi s proprietary FX communication protocols**, including **FX-Net**, **CC-Link**, and **Ethernet/IP**, ensuring seamless interoperability with other Mitsubishi devices, such as **FX series PLCs, Q series PLCs, and industrial robots**, as well as third-party equipment through compatible gateways.

A standout feature of these PLCs is their **high-speed processing capabilities**, with the **FX-4LC** offering **16 high-speed counters** (configurable up to 1 MHz) and **16 high-speed pulse outputs**, making it particularly suited for applications requiring precise timing, such as CNC machine control, servo motor synchronization, or high-speed packaging. Additionally, both controllers incorporate **built-in diagnostics and error reporting**, providing real-time feedback on system status, input/output faults, and communication issues, which minimizes downtime and simplifies troubleshooting. The **FX3G-24M** and **FX-4LC** also support **remote I/O expansion**, allowing users to extend their control system s reach without compromising performance, while their **compact and ruggedized design** ensures durability in harsh industrial environments, with protection ratings up to **IP65** for the base units and **IP20** for expansion modules.

Backed by Mitsubishi s **global warranty and technical support**, these PLCs come with a **standard 12-month limited warranty** (extendable in some regions) that covers defects in materials and workmanship, ensuring peace of mind for industrial operators. The **FX Series** is renowned for its **cost-effectiveness, ease of use, and compatibility with legacy systems**, making it a preferred choice for businesses transitioning from older PLC technologies or those seeking a balance between affordability and advanced functionality. Whether deployed in a small manufacturing facility, a research laboratory, or an automated warehouse, the **FX3G-24M** and **FX-4LC** deliver a dependable, scalable, and future-proof solution for modern automation challenges. With Mitsubishi s reputation for innovation and reliability, these controllers continue to set a benchmark for industrial control systems, offering a blend of simplicity, power, and adaptability that meets the demands of today s dynamic manufacturing landscape.

### **Pros and Cons of Buying a Mitsubishi FX3G-24M and FX-4LC Programmable Controller**

#### **Mitsubishi FX3G-24M (FX Series PLC)**

The **FX3G-24M** is a mid-range programmable logic controller (PLC) from Mitsubishi Electric, widely used in industrial automation. Below are its key advantages and disadvantages:

1. **Reliability and Proven Performance** The FX series has a long history of stable operation in industrial environments, making it a trusted choice for many manufacturers.

2. **Cost-Effective for Small to Medium Applications** Compared to higher-end PLCs (such as Q series or Siemens S7), the FX3G-24M offers a balance between affordability and functionality, making it suitable for basic automation tasks.

3. **Extensive I/O Options** Supports a wide range of analog and digital I/O modules, allowing flexibility in system expansion.

4. **Compatibility with Mitsubishi s Ecosystem** Works seamlessly with other Mitsubishi devices (e.g., HMI panels, servos, and drives) and software like **GX Developer** for programming.

5. **Good for Teaching and Learning** Often used in educational settings due to its simplicity and availability of training resources.

6. **Local Availability and Support** Widely distributed, meaning easier access to spare parts, manuals, and technical support in many regions.

7. **Basic but Functional Programming** Uses ladder logic (relay logic), which is intuitive for engineers familiar with electrical control systems.

1. **Limited Advanced Features** Lacks some high-end functionalities found in newer or competing PLCs (e.g., advanced motion control, built-in communication protocols like Profinet, or high-speed counter modules).

2. **Outdated Technology Compared to Modern PLCs** While still functional, it does not support the latest industrial communication standards (e.g., Ethernet/IP, Modbus TCP with full compliance) as robustly as newer models.

3. **Slower Processing Speed** Not ideal for high-speed or complex control applications that require real-time performance.

4. **No Built-in Web Server or Cloud Connectivity** Unlike some modern PLCs, it does not natively support remote monitoring or cloud-based diagnostics.

5. **Deprecated Software Support** Mitsubishi may phase out updates for older models, potentially limiting long-term software compatibility.

6. **Physical Size and Space Constraints** The unit itself is larger than some compact PLCs, which may be a limitation in space-restricted applications.

---

#### **Mitsubishi FX-4LC (FX Series PLC)**

The **FX-4LC** is an older model in Mitsubishi s FX series, predating the FX3G line. It shares many similarities with the FX3G but has some key differences in performance and features.

1. **Very Affordable (Used Market)** Often found at low prices in the used market, making it a budget-friendly option for basic automation.

2. **Simple and Reliable for Basic Tasks** Suitable for simple control applications where cost is a priority over advanced features.

3. **Easy to Program** Uses ladder logic, which is straightforward for engineers with a background in electrical controls.

4. **Small Footprint** The FX-4LC is more compact than the FX3G, which may be advantageous in space-constrained environments.

5. **Good for Legacy Systems** If the application requires compatibility with older Mitsubishi hardware or software, the FX-4LC may be a viable choice.

1. **Extremely Outdated** The FX-4LC is several generations older than the FX3G, meaning it lacks modern features, faster processing, and better communication options.

2. **Limited I/O Expansion** Fewer module options compared to the FX3G, restricting flexibility in system design.

3. **No Ethernet or Modern Communication** Relies on older communication protocols (e.g., RS-232, RS-422), which are less efficient and secure than Ethernet-based standards.

4. **Harder to Find Spare Parts** Due to its age, finding replacement units or specific modules may be challenging compared to newer models.

5. **No Long-Term Software Support** Mitsubishi has likely discontinued updates, meaning potential compatibility issues with newer versions of programming software.

6. **Slower Response Times** Not suitable for applications requiring high-speed control or real-time performance.

---

### **Comparison Summary**

Feature FX3G-24M FX-4LC

------------------------ ----------------------------------- ----------------------------------

**Price (New/Used)** Moderate (used units available) Very low (mostly used)

**Performance** Better than FX-4LC, suitable for medium tasks Very basic, limited to simple controls

**Communication** Supports RS-232, RS-422, Ethernet (limited) RS-232/RS-422 only

**I/O Flexibility** Wider module selection More limited

**Future-Proofing** Better than FX-4LC but still outdated Poor; may require replacement soon

**Best For** Small to medium automation projects Budget-friendly, legacy systems

---

### **Conclusion and Recommendation**

- **For new or moderately complex automation projects** where cost is a concern but reliability and basic functionality are required.

- **If compatibility with other Mitsubishi devices** (e.g., HMIs, drives) is necessary.

- **For applications that do not demand high-speed or advanced features** (e.g., simple machine control, conveyor systems, basic process automation).

- **When training or educational purposes** are involved, as the FX series is widely documented and taught.

- **For high-speed or real-time control applications** (consider a Q series or Siemens S7 instead).

- **If Ethernet-based communication (e.g., Profinet, Modbus TCP) is critical** the FX3G has limited support.

- **For long-term future-proofing** if the system may need upgrades in 5 10 years, a newer PLC with better communication and software support is advisable.

- **Only if absolutely necessary for a legacy system** where no other options exist.

- **For extremely budget-conscious projects** where the application is simple and the PLC will not be in use for long.

- **As a temporary or backup solution** while transitioning to a newer PLC.

- **For any new project** its age and lack of modern features make it unsuitable for modern industrial demands.

- **If reliability or long-term support is a concern** the risk of obsolescence is high.

- **For applications requiring any form of advanced communication or automation** (e.g., SCADA integration, cloud monitoring).

---

1. **Mitsubishi FX3G-24M** If the budget allows and the application is simple to medium-complexity, it is a reasonable choice for basic automation. However, be aware of its limitations in communication and speed.

2. **Mitsubishi Q Series (e.g., Q03UDE)** If budget permits, a Q series PLC offers better performance, modern communication, and long-term support. While more expensive upfront, it is more future-proof.

3. **Competing PLCs (e.g., Siemens S7-1200, Allen-Bradley Micro800, Omron CP1E)** These alternatives often provide better value in terms of features, communication, and software support for similar price points.

- **Opt for the FX3G-24M** over the FX-4LC, but be prepared to accept its limitations.

- **Check for used or refurbished Q series PLCs** if the budget allows these will serve you better in the long run.

**For most new applications, investing in a slightly more modern PLC (even if used) will save time, reduce maintenance issues, and ensure compatibility with future upgrades.** The FX-4LC is only recommended in rare cases where no other option exists.

Details:

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• brand: Mitsubishi
• mpn: Fx3g-24m
• part type: Controller
• country of origin: Japan

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• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
• condition: Used

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