ALLEN BRADLEY 855T-DL1BVM Automation

( Brand: Allen Bradley ), ( Manufacturer Part Number: 855T-DL1BVM )

Review ALLEN BRADLEY 855tdl1bvm Used

The **Allen-Bradley 855T-DL1BVM (855TDL1BVM)** is a high-performance, modular **CompactLogix 855T** controller designed for demanding industrial automation applications requiring robust processing power, advanced communication capabilities, and seamless integration with modern control systems. Part of Rockwell Automation s **CompactLogix 855T series**, this controller is engineered to deliver superior reliability, scalability, and flexibility for complex control tasks in manufacturing, process automation, and discrete production environments. With its **1 GHz dual-core processor**, the 855T-DL1BVM provides significantly enhanced computational performance compared to previous generations, enabling faster scan times, more efficient execution of control logic, and the ability to handle larger, more complex control programs with ease. This model features a **16 MB of user memory**, expandable via optional memory upgrades, ensuring ample storage for extensive ladder logic, structured text, or function block programs, as well as data logging and trend analysis requirements.

The **855T-DL1BVM** is equipped with **dual Ethernet ports (10/100 Mbps)**, including a dedicated **EtherNet/IP port** for high-speed, deterministic communication with other devices on the network, such as PLCs, HMIs, or remote terminals. This dual-port configuration enhances network redundancy and fault tolerance, minimizing downtime in critical applications. Additionally, the controller supports **EtherNet/IP, CIP Sync, and other CIP protocols**, enabling synchronized motion control, high-speed data exchange, and seamless integration with Rockwell s **FactoryTalk** software suite, including **FactoryTalk View SE, FactoryTalk Historian, and Studio 5000**. The inclusion of **CIP Sync** further enhances its suitability for motion control applications, allowing precise coordination between multiple axes or devices in high-speed manufacturing processes.

Designed with **industrial durability in mind**, the 855T-DL1BVM operates within a **wide temperature range (-20 C to 60 C)**, making it ideal for deployment in harsh environments such as factories, warehouses, or outdoor control cabinets. Its **compact, DIN-rail-mountable form factor** (1.75 inches wide) allows for efficient space utilization in control panels, while its **modular design** enables easy expansion through the addition of **I/O modules, communication modules, or memory upgrades** via the **CompactLogix 855T chassis**. The controller also supports **remote I/O and distributed architecture**, reducing wiring complexity and improving system scalability for large-scale automation projects. Security is another key feature, with built-in **EtherNet/IP security (EIPSEC)** and support for **TACACS and RADIUS authentication**, ensuring protected access to the controller and network resources.

The **855T-DL1BVM** is fully compatible with **Rockwell Automation s Studio 5000 Logix Designer**, providing developers with a powerful, integrated environment for programming, debugging, and monitoring control systems. Its support for **structured text, ladder logic, and function block programming** ensures compatibility with existing automation projects while enabling the adoption of modern programming practices. The controller s **high-speed scan rates** and **deterministic communication** make it well-suited for applications requiring precise timing, such as packaging machines, robotic systems, or high-speed assembly lines. Whether deployed in a standalone configuration or as part of a larger **ControlLogix or CompactLogix network**, the **855T-DL1BVM** delivers the performance, reliability, and connectivity needed to meet the challenges of modern industrial automation.

### **Pros and Cons of buying a Allen-Bradley 855T-DL1BVM (855TDL1BVM) Controller**

#### **Pros**

1. **High Performance and Reliability**

The 855T series is part of Rockwell Automation s CompactLogix platform, known for robust industrial automation. It is designed for demanding applications, offering high-speed processing, deterministic control, and minimal latency, which is critical in manufacturing, process control, and motion applications.

2. **Scalability and Flexibility**

The 855T supports up to 16 slots for expansion modules, allowing for the integration of additional I/O, communication modules, and specialized function blocks. This modularity makes it suitable for both small and large control systems, accommodating growth without requiring a complete replacement.

3. **Advanced Communication Capabilities**

The controller includes built-in Ethernet/IP, CIP Sync, and other communication protocols, enabling seamless integration with other PLCs, HMIs, SCADA systems, and enterprise networks. This facilitates real-time data exchange and remote monitoring, improving overall system efficiency.

4. **Enhanced Security Features**

The 855T supports security protocols such as CIP Security and TLS/SSL for encrypted communication, reducing the risk of cyber threats. This is particularly important in industries where data integrity and system protection are paramount.

5. **Compatibility with Rockwell s Ecosystem**

As part of the CompactLogix family, it is fully compatible with Rockwell s Studio 5000 software suite, including RSLogix 5000, FactoryTalk View, and other tools. This ensures ease of programming, debugging, and maintenance within a familiar environment.

6. **Deterministic Motion Control**

The 855T is capable of handling complex motion control tasks with high precision, thanks to its integrated motion instructions and support for CIP Motion. This makes it ideal for applications requiring synchronized multi-axis control, such as packaging, material handling, and robotics.

7. **Long-Term Availability and Support**

Rockwell Automation has a strong reputation for supporting its products over extended periods, ensuring availability of spare parts, firmware updates, and technical support. This reduces the risk of obsolescence and downtime.

8. **Energy Efficiency**

The 855T is designed with power-saving features, such as low-power modes and efficient processing, which can help reduce operational costs in energy-intensive environments.

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#### **Cons**

1. **High Initial Cost**

The 855T-DL1BVM is a premium product, and its price point is significantly higher than entry-level PLCs. For small-scale or low-budget applications, this may be a prohibitive factor.

2. **Complexity for Beginners**

The advanced features of the 855T, such as its extensive I/O options, communication protocols, and motion control capabilities, can be overwhelming for users with limited PLC experience. Training and expertise may be required to fully utilize its potential.

3. **Dependency on Rockwell s Software**

While the compatibility with Studio 5000 is a strength, it also means that users are locked into Rockwell s ecosystem. Switching to third-party software or alternative PLC brands may require additional effort and potential compatibility issues.

4. **Physical Size and Space Requirements**

The 855T is a rack-mounted controller, which means it requires dedicated space in an electrical enclosure. For applications with limited panel space, this could be a constraint.

5. **Potential for Overkill in Simple Applications**

If an application does not require the advanced features of the 855T (e.g., high-speed motion, extensive I/O, or complex networking), investing in this controller may be unnecessary. A simpler, more cost-effective PLC (such as a CompactLogix 1768 or Micro800) might suffice.

6. **Licensing and Software Costs**

Access to Rockwell s full suite of software tools (e.g., FactoryTalk View, Motion Edition) may require additional licensing fees, increasing the total cost of ownership.

7. **Maintenance and Training Costs**

Due to its complexity, maintaining and troubleshooting the 855T may require specialized training or hiring personnel with expertise in Rockwell Automation products, adding to operational expenses.

---

### **Conclusion**

The **Allen-Bradley 855T-DL1BVM** is a powerful, high-performance PLC ideal for applications demanding advanced control, scalability, and integration with Rockwell s ecosystem. Its strengths lie in its reliability, communication capabilities, motion control, and long-term support. However, its high cost, complexity, and dependency on Rockwell s software may not justify its use in simpler or budget-constrained applications.

### **Recommendation**

- Your application requires high-speed processing, complex motion control, or extensive I/O expansion.

- You are already invested in Rockwell Automation s ecosystem and need seamless integration with existing systems.

- Long-term reliability, security, and support are critical for your operation.

- You have the budget and expertise to fully utilize its capabilities.

- Your application is simpler and does not require the advanced features of the 855T.

- Cost is a major constraint, and a more affordable PLC can meet your needs.

- You prefer flexibility in software or communication protocols beyond Rockwell s ecosystem.

Ultimately, the 855T-DL1BVM is a **strong choice for industrial applications requiring high performance and scalability**, but it is not the best fit for every scenario. Carefully evaluate your requirements before making a purchase.

Details:

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

part #: 855tdl1bvm prices

• $17.60-$19.99

specifications automationjack:

• brand: Allen Bradley
• mpn: 855t-dl1bvm

shipping automationjack:

• service: Standard
• class: Standard
• cost: $12.90
• transit: 24-37 Days
• type: Fixed

general automationjack:

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

returns automationjack:

• policy: Returns Accepted
• paid by: Buyer
• method: Money back
• time: 30 Days

payments automationjack:

• credit card: Discover
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seller automationjack:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 202303
• rating: 99.7%

offer automationjack:

• availability: In Stock
• started: May 3, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home

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