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  3. MODICON AS-M84A-001

MODICON AS-M84A-001 Schneider Electric

As-m84a-001 Modicon Schneider Electric / Asm84a001 Used

( Brand: Modicon ), ( Manufacturer Part Number: AS-M84A-001 )

Review MODICON Schneider Electric Asm84a001 Used

The **Schneider Electric AS-M84A-001 (Modicon AS-M84A-001)** is a high-performance, modular programmable logic controller (PLC) designed to deliver robust automation solutions for industrial applications requiring advanced control, scalability, and reliability. Part of Schneider Electric s EcoStruxure architecture, this AS-M84A series PLC is engineered to meet the demands of modern manufacturing, process control, and discrete automation environments where precision, efficiency, and connectivity are critical. The AS-M84A-001 serves as the foundational unit in a flexible, expandable system, offering a compact yet powerful base module that integrates seamlessly with a wide range of I/O modules, communication interfaces, and human-machine interface (HMI) solutions. Built with Schneider Electric s commitment to energy efficiency and sustainability, this PLC incorporates EcoStruxure principles, ensuring reduced energy consumption and lower operational costs while maintaining high performance.

At its core, the AS-M84A-001 features a robust CPU with a high-speed processing engine capable of executing complex control algorithms, motion control tasks, and real-time data acquisition with minimal latency. The unit supports Schneider Electric s **Modbus, PROFINET, Ethernet/IP, and Modbus TCP** communication protocols, enabling seamless integration with enterprise systems, SCADA platforms, and other industrial networks. Its modular design allows for easy expansion through the addition of digital, analog, or specialized I/O modules, accommodating applications ranging from simple machine control to sophisticated process automation. The AS-M84A-001 also supports advanced features such as **remote I/O, distributed control, and cloud connectivity**, making it ideal for applications requiring decentralized or distributed automation architectures.

The physical design of the AS-M84A-001 reflects Schneider Electric s emphasis on durability and ease of installation. The base module is housed in a rugged, DIN-rail or panel-mount enclosure, designed to withstand harsh industrial environments, including temperature fluctuations, vibration, and electromagnetic interference. Its compact footprint ensures efficient use of control panel space, while the front-panel indicators provide quick status monitoring of the PLC s operational state, including power, communication, and error conditions. The unit s backplane architecture supports high-speed data transfer between modules, reducing communication bottlenecks and improving overall system responsiveness.

Software-wise, the AS-M84A-001 is fully compatible with **EcoStruxure Machine Expert**, Schneider Electric s intuitive and powerful programming environment. This software provides a user-friendly interface for ladder logic programming, structured text, function block diagrams, and other IEC 61131-3 compliant languages, catering to both experienced engineers and less experienced operators. Additionally, EcoStruxure Machine Expert offers built-in tools for diagnostics, troubleshooting, and remote monitoring, streamlining maintenance and reducing downtime. The PLC also supports **Schneider Electric s EcoStruxure Advisor**, an AI-driven analytics platform that leverages predictive maintenance capabilities to optimize equipment performance and extend asset lifecycle.

For applications requiring enhanced connectivity and integration with Industry 4.0 initiatives, the AS-M84A-001 supports **OPC UA, MQTT, and RESTful APIs**, enabling seamless data exchange with cloud-based platforms, ERP systems, and other digital infrastructure. This level of connectivity allows manufacturers to implement smart factory concepts, such as real-time performance monitoring, remote asset management, and data-driven decision-making. The unit s support for **Schneider Electric s EcoStruxure IoT Gateway** further extends its capabilities, enabling secure data collection and transmission to the cloud for advanced analytics and visualization.

In summary, the **Schneider Electric AS-M84A-001 (Modicon AS-M84A-001)** is a versatile, high-performance PLC that combines reliability, scalability, and advanced connectivity to address the evolving needs of modern industrial automation. Whether deployed in discrete manufacturing, process control, or distributed automation systems, this base module provides the foundation for building efficient, flexible, and future-proof control solutions. Its integration with Schneider Electric s EcoStruxure ecosystem ensures compatibility with a broad range of hardware and software tools, making it an ideal choice for engineers and operators seeking a robust, future-ready automation platform.

### **Pros and Cons of buying a Modicon AS-M84A-001 (Schneider Electric ASM84A001)**

#### **Pros:**

1. **Reliability and Brand Reputation** Schneider Electric (formerly Modicon) is a well-established manufacturer in industrial automation, known for durable and high-performance PLCs. The AS-M84A series is part of their legacy line, which has been widely used in industrial applications for decades.

2. **Compatibility with Legacy Systems** The AS-M84A-001 is designed to integrate with older Modicon and Schneider Electric systems, making it a practical choice for facilities that still rely on Modicon s architecture. It supports Modbus, serial communication, and other legacy protocols.

3. **Cost-Effective for Maintenance** Since this is a discontinued but still widely available unit, purchasing it can be cheaper than newer Schneider Electric PLCs. It may also be easier to source spare parts or replacement units compared to newer, less common models.

4. **Proven Performance in Industrial Environments** The AS-M84A series is built for harsh industrial conditions, with robust construction and resistance to temperature fluctuations, vibration, and electrical noise.

5. **Familiarity for Skilled Technicians** Many industrial engineers and technicians are already familiar with Modicon s programming and hardware, reducing the learning curve for maintenance and troubleshooting.

6. **Backward Compatibility with Older Software** The unit can be programmed using older versions of Modsoft or other Schneider Electric software, which may still be in use in some facilities.

7. **Scalability for Small Control Tasks** With 8 input/output points (expandable via optional modules), it is suitable for simple control applications, such as motor starters, pump control, or basic process automation.

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#### **Cons:**

1. **Outdated Technology** The AS-M84A is an older model (released in the late 1990s/early 2000s) and lacks modern features such as Ethernet, advanced security protocols, or high-speed communication options. This can limit integration with newer SCADA systems or IoT platforms.

2. **Limited Scalability** Unlike newer Schneider Electric PLCs (e.g., EcoStruxure, Modicon M580, or Quantum), the AS-M84A has very limited expansion capabilities. Adding more I/O requires external modules, which may not be as flexible or powerful as modern solutions.

3. **No Built-in Ethernet or Modern Communication** The unit relies primarily on serial (RS-232/485) communication, which is slower and less secure compared to Ethernet-based protocols like Modbus TCP, Profibus, or Profinet. This can be a bottleneck in modern industrial networks.

4. **Deprecated Software Support** Schneider Electric has phased out support for older software versions used with the AS-M84A. While the hardware may still function, finding updated documentation or technical support can be difficult.

5. **Higher Long-Term Maintenance Risks** As components age, finding replacement parts or technicians familiar with this model may become increasingly difficult. Over time, this could lead to higher downtime or the need for premature replacement.

6. **Security Vulnerabilities** Older PLCs lack modern cybersecurity features such as firmware updates, encryption, or secure authentication. This makes them more susceptible to cyber threats in an increasingly connected industrial environment.

7. **Limited Integration with Modern Systems** Newer SCADA, MES, or cloud-based systems often require Ethernet or IP-based communication, which the AS-M84A does not support natively. Adapters or workarounds may be necessary, adding complexity.

8. **End-of-Life Status** While the unit is still functional, Schneider Electric has likely discontinued production and support. This means no official warranties, limited training resources, or future firmware updates.

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### **Conclusion**

The **Modicon AS-M84A-001 (ASM84A001)** is a reliable and cost-effective choice for **legacy industrial applications** where compatibility with older systems is critical, and the control task is simple. It excels in environments where **serial communication, durability, and familiarity with Modicon s architecture** are priorities. However, for **modern industrial automation**, its lack of Ethernet, limited scalability, and outdated technology make it a less ideal long-term solution.

If your application requires **high-speed communication, cybersecurity, or integration with newer SCADA/MES systems**, investing in a **modern Schneider Electric PLC (e.g., EcoStruxure, Modicon M580, or Quantum)** would be a better long-term decision. However, if you are maintaining an existing Modicon-based system or need a **low-cost, simple control solution**, the AS-M84A-001 remains a viable option provided you account for its limitations.

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### **Recommendation**

- **Buy the AS-M84A-001 if:**

- You are maintaining an existing Modicon system and need a replacement unit.

- Your application is **simple and does not require Ethernet or advanced communication**.

- Cost is a primary concern, and you can manage the lack of modern features.

- You have **serial communication infrastructure** already in place.

- **Avoid the AS-M84A-001 if:**

- You are starting a **new industrial automation project** and need future-proofing.

- Your system requires **Ethernet, high-speed data transfer, or cybersecurity features**.

- You plan to integrate with **modern SCADA, cloud, or IoT platforms**.

- Long-term maintenance and technician availability are concerns.

- **Alternative Considerations:**

- For **legacy compatibility**, explore **Schneider Electric s Modicon M340 or M580** (if budget allows), as they offer better communication options while maintaining some backward compatibility.

- For **new installations**, prioritize **EcoStruxure or Quantum PLCs**, which provide Ethernet, advanced diagnostics, and cybersecurity.

- If budget is tight, consider **used or refurbished newer Schneider Electric PLCs** (e.g., M221, M340) that offer better long-term support.

Ultimately, weigh the **immediate needs of your application** against the **future scalability and maintenance challenges** before making a decision.

Details:

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. Call to use a shipping service other than the ones listed. All products are guaranteed to be working but may show signs of use if purchasing a used product. Sells new and surplus product develops channels to purchase such.

part #: asm84a001 prices

  • $239.00-$824.16

specifications sensoindustria:

  • brand: Modicon
  • mpn: As-m84a-001

general sensoindustria:

  • PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules
  • condition: Used

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offer sensoindustria:

  • started: March 20, 2026
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • quantity: 1

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  • type: Fixed
  • service: Standard
  • cost: $12.90
  • transit: 29-34 Days
  • class: Standard

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  • paid by: Buyer
  • time: 30 Days
  • method: Money back
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  • city: 1 Millennium Dr, Willingboro, NJ 08046
  • rating: 99.6%
  • # reviews: 195556
category: business & industrial > plcs hmis > plc peripheral modules > plc input output modules, sku: 21564643138630813,
Modicon AS-M84A-001 Is Similar To:
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3 offers $239.00–$824.16 USD
  • New. Offer #1 priced at $239.00 + $40.70 shipping estimate = $279.70* total. +$40.70 shipping
  • New – Open box. Offer #2 priced at $824.16 + $28.45 shipping estimate = $852.61* total. 120/240 VAC. New surplus.+$28.45 shipping
  • Used. Offer #3 priced at $595.00 + $13.70 shipping estimate = $608.70* total. Modicon .+$13.70 shipping

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