ALLEN BRADLEY 1732D-OB8EM8 Plc Modules

( Brand: Allen Bradley ), ( Manufacturer Part Number: 1732D-OB8EM8 ), ( Part Type: Module )

Review ALLEN BRADLEY 1732dob8em8 Used

The **Allen-Bradley 1732-DOB8EM8** is a high-performance, modular **CompactLogix 1732** controller designed for demanding industrial automation applications requiring robust communication, high-speed processing, and seamless integration with modern control systems. Part of Rockwell Automation s **CompactLogix** series, this **D-series** processor combines advanced computing power with Ethernet-based connectivity, making it ideal for distributed control architectures, machine automation, and process optimization in industries such as manufacturing, packaging, material handling, and discrete automation. Engineered with a **1732-D** base unit, this model features an **8MB embedded memory** (expandable via optional memory upgrades) and an **Ethernet port** for reliable, high-speed data exchange, ensuring real-time communication with Human Machine Interfaces (HMIs), Programmable Logic Controllers (PLCs), and enterprise-level systems. The **D-series** architecture leverages **Rockwell s Structured Text (ST), Ladder Logic (LAD), and Function Block Diagram (FBD)** programming environments, supported by **Studio 5000 Logix Designer**, allowing engineers to develop complex control logic with ease while maintaining compatibility with existing Allen-Bradley ecosystems. With **deterministic Ethernet communication** and support for **CIP (Common Industrial Protocol)**, the 1732-DOB8EM8 facilitates high-bandwidth data transfer, enabling synchronized motion control, device networking, and integration with **Allen-Bradley PowerFlex drives, Compact GuardLogix safety controllers, and other CIP-compatible devices**. Its **industrial-grade construction** ensures durability in harsh environments, with features such as **wide operating temperature ranges (-20 C to 60 C)**, **vibration resistance**, and **rugged enclosure compatibility**, making it suitable for both indoor and outdoor applications. Additionally, the **Ethernet port** supports **VLAN tagging, QoS (Quality of Service), and IPv6**, enhancing network security and flexibility for modern industrial communication standards. Whether deployed as a standalone controller or as part of a larger **ControlLogix** or **CompactLogix** network, the **1732-DOB8EM8** delivers reliable, scalable automation solutions with minimal latency, making it a versatile choice for engineers seeking high-performance, future-proof control systems.

### **Pros and Cons of buying a Allen-Bradley 1732-DOB8EM8 (1732-DOB8EM8) Controller**

#### **Pros**

1. **Reliability and Durability**

The Allen-Bradley 1732-DOB8EM8 is part of Rockwell Automation s **CompactLogix** series, known for robust industrial-grade construction. It is designed for harsh environments, offering long-term reliability in manufacturing, process control, and automation applications.

2. **High Performance and Processing Power**

This controller is based on the **PowerPC** architecture, providing fast execution speeds and efficient handling of complex control logic. It supports **real-time control**, making it suitable for applications requiring precise timing and synchronization.

3. **Scalability and Flexibility**

The **1732-DOB8EM8** is part of the **CompactLogix 5370** platform, which allows for easy expansion via additional I/O modules, communication ports (Ethernet, serial, etc.), and support for **remote I/O** and **distributed control**. This modularity makes it adaptable to growing automation needs.

4. **Strong Communication Capabilities**

It features built-in **Ethernet (Industrial Ethernet)** and **serial (RS-232/485)** ports, enabling seamless integration with **HMI (Human-Machine Interface) systems, SCADA, PLCs, and other industrial networks**. Support for **CIP (Common Industrial Protocol)** and **EtherNet/IP** ensures compatibility with Rockwell s ecosystem and third-party devices.

5. **Advanced Safety and Security Features**

The CompactLogix series includes **security features** such as **firewall protection, encryption, and secure boot**, reducing the risk of cyber threats. Additionally, it supports **safety protocols** (e.g., **Safety over Ethernet/IP**) for integrated safety applications.

6. **Compatibility with Rockwell s Software Suite**

The controller works seamlessly with **Studio 5000**, **RSLogix 5000**, and **FactoryTalk View**, providing a unified development and monitoring environment. This reduces programming complexity and improves efficiency.

7. **Wide Range of Input/Output Options**

The **DOB8EM8** module (Discrete Output, 8 channels, 8A 24V DC) is part of a larger family of I/O modules, allowing users to select the appropriate configuration for their application (e.g., analog, high-power outputs, etc.).

8. **Support for Advanced Control Algorithms**

The controller supports **PID control, motion control, and advanced control strategies**, making it suitable for applications requiring precise process regulation, servo control, or closed-loop systems.

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

As part of Rockwell s legacy and widely adopted product line, spare parts, documentation, and technical support are readily available. This reduces the risk of obsolescence compared to newer, less established brands.

10. **Cost-Effective for Medium to Large Applications**

While the initial cost may be higher than entry-level PLCs, the **long-term operational efficiency, reliability, and scalability** often justify the investment for industrial applications requiring high performance.

---

#### **Cons**

1. **Higher Upfront Cost**

Compared to **entry-level PLCs** (e.g., Siemens LOGO!, Omron CP1E, or smaller Allen-Bradley Micro800 models), the **1732-DOB8EM8** is more expensive. This may be a barrier for small businesses or budget-constrained projects.

2. **Complexity for Beginners**

The **CompactLogix** platform, while powerful, has a steeper learning curve than simpler PLCs. Users unfamiliar with **Ladder Logic, Structured Text, or Rockwell s software suite** may require additional training.

3. **Dependence on Rockwell s Ecosystem**

While the controller integrates well with Rockwell products, **third-party compatibility** may require additional drivers or gateways. Some advanced features (e.g., certain communication protocols) may not be natively supported outside Rockwell s environment.

4. **Physical Size and Space Requirements**

The **CompactLogix 5370** series is larger than micro or nano PLCs, requiring more rack space in control panels. This may be a limitation in **space-constrained applications**.

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

For **simple on/off control, small-scale automation, or low-budget projects**, a **1732-DOB8EM8** may offer more features than needed, making a **less expensive PLC** (e.g., Allen-Bradley Micro850, Siemens S7-1200) a more practical choice.

6. **Software Licensing Costs**

While **RSLogix 5000** is included with some purchases, **Studio 5000** (the newer, more advanced IDE) may require a paid license for full functionality. This adds to the total cost of ownership.

7. **Limited Analog Input/Output in Base Model**

The **1732-DOB8EM8** is primarily a **discrete output module**. If analog signals (e.g., temperature, pressure) are required, additional **AI/AO modules** must be purchased, increasing complexity and cost.

8. **Firmware and Driver Updates**

While Rockwell provides updates, **firmware changes** can sometimes introduce compatibility issues with existing programs or hardware. Users must ensure their system is updated properly to avoid disruptions.

9. **Resale Value and Depreciation**

Like most industrial automation equipment, the **1732-DOB8EM8** depreciates over time. While it remains a reliable choice, its **resale value** may not be as high as newer, more energy-efficient models.

10. **Learning Curve for Advanced Features**

Features such as **motion control, advanced safety, or high-speed I/O** require specialized knowledge. Implementing these may necessitate hiring additional personnel or consulting experts, increasing project costs.

---

### **Conclusion**

The **Allen-Bradley 1732-DOB8EM8 (CompactLogix 5370)** is a **high-performance, reliable, and scalable** PLC ideal for **medium to large industrial automation applications** where **speed, precision, and integration with Rockwell s ecosystem** are critical. Its **durability, advanced control capabilities, and strong communication options** make it a **preferred choice for manufacturing, process control, and complex machine automation**.

However, its **higher cost, complexity for beginners, and dependence on Rockwell s software** may make it **less suitable for small-scale, budget-sensitive, or simple control applications**. If the application is **resource-intensive, requires long-term reliability, or needs seamless integration with other Rockwell devices**, this controller is an excellent investment. For **smaller projects or cost-sensitive environments**, a **less expensive PLC** (e.g., Micro800, S7-1200, or even a higher-end microPLC) may be a more practical alternative.

---

### **Recommendation**

- You are working on a **medium to large industrial automation project** requiring **high-speed control, scalability, and integration with Rockwell s ecosystem**.

- Your application demands **EtherNet/IP, advanced safety, or complex logic** that the CompactLogix platform excels at.

- You have **existing Rockwell infrastructure** (e.g., Studio 5000, FactoryTalk View) and need **seamless compatibility**.

- Long-term **reliability and support** are priorities, and budget constraints are not a major concern.

- Your project is **small-scale, low-budget, or requires simple on/off control**.

- You lack **experience with Ladder Logic or Rockwell software** and need a **simpler, more beginner-friendly** PLC.

- The application does **not require high-speed processing or advanced communication protocols**.

- You are looking for **lower upfront costs** and **easier scalability** with less complex hardware.

For most **industrial automation projects where performance and reliability are paramount**, the **1732-DOB8EM8 remains a strong and justified choice**. However, **careful evaluation of project requirements** will determine whether its advantages outweigh its drawbacks.

Details:

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

part #: 1732dob8em8 prices

• $116.59-$272.00

specifications sensoindustria:

• brand: Allen Bradley
• mpn: 1732d-ob8em8
• part type: Module

returns sensoindustria:

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

payments sensoindustria:

• wallet: Google-pay
• other
• credit card: Mastercard

seller sensoindustria:

• # reviews: 189857
• rating: 99.5%
• city: 1 Millennium Dr, Willingboro, NJ 08046

general sensoindustria:

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

offer sensoindustria:

• quantity: 1
• availability: In Stock
• started: February 12, 2026
• sold: 0
• options: Ship-to-home

shipping sensoindustria:

• service: Standard
• transit: 30-35 Days
• class: Standard
• cost: $12.90
• type: Fixed

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