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  3. ALLEN BRADLEY 1746-NI0V4

ALLEN-BRADLEY 1746-NI0V4 Circuit Board T-957

1746-ni0v4 Allen-bradley Circuit Board T-957

( Brand: Allen-bradley ), ( Manufacturer Part Number: 1746-NI0V4 ), ( Part Type: Circuit Board )

Review ALLEN BRADLEY Circuit Board

The **Allen-Bradley 1746-NI0V4** is a high-performance **CompactLogix 1746-NI** analog input module designed to integrate seamlessly into Allen-Bradley s scalable ControlLogix and CompactLogix programmable automation controller (PAC) systems. This **T-957** revision circuit board serves as the foundational hardware component for the **1746-NI0V4**, a 4-channel, isolated, universal analog input module capable of processing a wide range of voltage and current signals with exceptional precision. Engineered for industrial automation applications, this module supports both **4-20 mA** and **0-10 VDC** input ranges, making it versatile for interfacing with sensors, transducers, and field devices in manufacturing, process control, and discrete automation environments. The **isolated design** ensures robust protection against noise and ground loops, enhancing signal integrity in harsh industrial settings where electrical interference is common. Built with **Allen-Bradley s reliable hardware architecture**, the 1746-NI0V4 leverages the **ControlLogix platform s deterministic communication** via the **DeviceNet, Ethernet/IP, or serial (RS-232/485) interfaces**, enabling real-time data acquisition and seamless integration with PLC logic. The module s **T-957 circuit board revision** incorporates optimized signal conditioning circuitry, high-precision **16-bit analog-to-digital converters (ADCs)**, and **fault detection mechanisms**, including input range checks and short-circuit protection, to ensure operational reliability and diagnostic clarity. Whether deployed in **motion control systems, HVAC regulation, chemical processing, or material handling**, this module delivers **sub-microvolt resolution** and **low noise performance**, making it ideal for applications requiring high-accuracy analog signal processing. Backward and forward compatible with the **CompactLogix 1746 family**, the 1746-NI0V4 is a critical component for engineers and automation professionals seeking a **durable, high-performance analog input solution** that enhances productivity and reduces downtime in mission-critical automation systems.

The **Allen-Bradley 1746-NI0V4** circuit board (part number **T-957**) is a critical component for the **CompactLogix 1746-L30ER/L32ER/L33ER/L34ER** controllers, serving as the **Network Interface (NI) module** for Ethernet/IP communication. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a 1746-NI0V4 (T-957)**

1. **Direct Compatibility with CompactLogix Controllers**

The module is designed specifically for the **1746-L3xER series**, ensuring seamless integration without additional adapters or modifications. It supports **Ethernet/IP**, the standard industrial communication protocol used in Rockwell Automation systems.

2. **Reliable Performance for Industrial Environments**

Allen-Bradley modules are built to withstand harsh conditions, including temperature fluctuations, electrical noise, and mechanical stress. The **NI0V4** is no exception, offering stable communication for PLC applications in manufacturing, process control, and automation.

3. **Backward and Forward Compatibility**

While primarily for **L3xER models**, it may also work with some older **1746-L3x** (non-ER) controllers, though this depends on firmware and hardware versions. It is fully compatible with **RSLogix 5000, Studio 5000, and FactoryTalk View** software.

4. **Cost-Effective Replacement for Failed Modules**

If the original **Network Interface module** fails in a CompactLogix controller, replacing it with a **1746-NI0V4** is often cheaper than purchasing a new entire controller. This extends the lifespan of existing automation systems.

5. **Easy Installation and Configuration**

The module plugs directly into the **L3xER backplane**, and configuration is straightforward via **Ethernet/IP** settings in the PLC programming software. No additional hardware (like a separate Ethernet card) is required.

6. **Support for Advanced Networking Features**

The **NI0V4** supports **VLAN tagging, priority-based traffic, and multiple device connections**, making it suitable for complex industrial networks where reliability and low latency are critical.

7. **Widely Available and Supported**

As an **OEM (Original Equipment Manufacturer) part**, it is readily available from **Rockwell Automation, authorized distributors, and third-party suppliers**. It also benefits from **extended warranty options** and **technical support** from Rockwell.

8. **Future-Proofing for Software Updates**

Since it is a **standard Allen-Bradley module**, it will continue to receive **firmware updates and compatibility patches** for newer versions of **Studio 5000** and **FactoryTalk** software.

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### **Cons of buying a 1746-NI0V4 (T-957)**

1. **Limited to Ethernet/IP Only**

The **NI0V4** does **not** support other communication protocols such as **Modbus TCP, PROFINET, or DeviceNet**. If your system requires multiple protocols, you may need additional modules (e.g., a **1756-NET-ENI** for additional Ethernet ports).

2. **Potential Obsolescence Risk**

While still in production, **CompactLogix L3xER controllers are not the latest generation** (compared to **1756-L7xER or 1756-L8xER**). If you plan to **upgrade your PLC system in the future**, the **NI0V4 may become obsolete**, requiring a different network interface.

3. **No Built-In Redundancy or Fail-Safe Features**

Unlike some enterprise-grade Ethernet switches, the **NI0V4 does not support redundant links or failover mechanisms**. If the Ethernet connection drops, the PLC may lose communication until the issue is resolved.

4. **Physical Size and Backplane Constraints**

The **L3xER series has limited backplane slots**, and replacing the **NI0V4** may require removing other modules to free up space. This can be inconvenient in tightly integrated systems.

5. **Dependence on Rockwell Automation s Ecosystem**

If you are **not using Rockwell Automation software (RSLogix, Studio 5000)**, you may need **third-party tools** to configure and troubleshoot the module, which can add complexity.

6. **Potential for Counterfeit or Low-Quality Replacements**

When purchasing from **third-party sellers (e.g., eBay, Alibaba, or uncertified distributors)**, there is a risk of receiving **counterfeit or refurbished modules** that may fail prematurely. Always buy from **authorized Rockwell dealers or trusted suppliers**.

7. **No Integrated Security Features**

Unlike modern industrial Ethernet switches, the **NI0V4 lacks built-in security features** such as **VLAN isolation, port security, or encryption**. This could be a concern in **high-security industrial environments**.

8. **Limited Expansion Capabilities**

If your application requires **additional Ethernet ports**, you must either:

- Use a **separate Ethernet switch** (external to the PLC).

- Upgrade to a **higher-end CompactLogix model (e.g., 1756-L7xER)** that supports multiple network interfaces.

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### **Conclusion**

The **Allen-Bradley 1746-NI0V4 (T-957)** is a **reliable, cost-effective, and straightforward solution** for **Ethernet/IP communication** in **CompactLogix L3xER controllers**. It excels in **industrial reliability, ease of integration, and direct compatibility** with Rockwell Automation s software ecosystem.

However, its **lack of support for other protocols, potential obsolescence risk, and limited redundancy** make it less ideal for **future-proofing or highly complex networking setups**. If your system **only requires Ethernet/IP and you need a quick, budget-friendly replacement**, this module is an excellent choice. But if you anticipate **upgrades, multiple protocols, or high-availability requirements**, you may need to consider **alternative solutions** (e.g., **1756-NET-ENI, external switches, or newer PLC models**).

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### **Recommendation**

1. **Buy from an Authorized Source**

- Purchase the **1746-NI0V4 (T-957)** from **Rockwell Automation s official website, an authorized distributor (e.g., Grainger, RS Components, or local Rockwell dealers), or a trusted third-party supplier with return policies**.

- Avoid **unknown sellers** to prevent counterfeit or damaged units.

2. **Verify Compatibility Before Purchase**

- Confirm that your **CompactLogix model (L30ER/L32ER/L33ER/L34ER)** is compatible.

- Check your **firmware version** some older units may require a **microcode update** for full functionality.

3. **Consider a Backup or Redundant Solution**

- If **network reliability is critical**, pair the **NI0V4 with an external managed switch** or consider a **redundant PLC setup**.

- If you need **additional Ethernet ports**, evaluate upgrading to a **1756-L7xER or 1756-L8xER** controller.

4. **Plan for Future Upgrades**

- If your automation system is **expected to grow**, research **scalable alternatives** (e.g., **ControlLogix 5562 or 5580** with built-in Ethernet redundancy).

- Document your **network configuration** to simplify future migrations.

5. **Test Before Full Deployment**

- Replace the module in a **non-critical application first** to ensure proper functionality.

- Verify **Ethernet/IP communication** using **RSLogix 5000 or Studio 5000** before relying on it in production.

### **Final Verdict**

The **1746-NI0V4 (T-957) is a solid, dependable choice** for **Ethernet/IP networking in CompactLogix L3xER controllers**, particularly for **replacement purposes or short-term use**. However, if **long-term scalability, multiple protocols, or high availability** are priorities, a **more advanced networking solution** may be necessary. **Proceed with confidence if your requirements align with its strengths.**

Details:

Perfect for industrial automation applications, this module ensures seamless communication between sensors and the PLC, enabling precise control in various manufacturing processes. The Allen Bradley 1746-NI0V4 Circuit Board is a specialized input module designed for use in Programmable Logic Controllers PCs. No cover LS.

part #: 1746ni0v4 price

  • $30.00

specifications sensoindustria:

  • brand: Allen-bradley
  • mpn: 1746-ni0v4
  • part type: Circuit Board

offer sensoindustria:

  • started: February 16, 2026
  • availability: In Stock
  • options: Ship-to-home
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  • quantity: 2
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  • condition: Used
  • PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules

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part type: circuit board,
category: business & industrial > plcs hmis > plc peripheral modules > plc input output modules, sku: 20801697072886721,
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  • Used. Offer #1 priced at $30.00 + $0.00 shipping estimate = $30.00* total. (No cover) LS The Allen Bradley Circuit Board is a specialized input module designed for use in Programmable Logic Controllers (PLCs).FREE SHIPPING

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