ALLEN-BRADLEY NIC-2003 Network Board KC3315-01 R0157185-S21 CA56103008 N353

( Brand: Allen-bradley ), ( Manufacturer Part Number: NIC-2003 ), ( Part Type: Board ), ( Controller Platform: Plc-5 )

Review ALLEN BRADLEY Network Board

The **Allen-Bradley NIC-2003 Network Controller (KC3315-01, R0157185-S21, CA56103008, N353)** is a robust, high-performance communication module designed to seamlessly integrate industrial automation systems with Ethernet-based networks, enabling reliable data exchange between PLCs, HMIs, and enterprise-level IT infrastructure. Part of Rockwell Automation s trusted line of network interfaces, this compact yet powerful device serves as a critical bridge between Allen-Bradley controllers such as CompactLogix, ControlLogix, or SLC 500 series and Ethernet networks, including standard TCP/IP, Modbus TCP, or CIP (Common Industrial Protocol) configurations. Engineered with industrial-grade durability, the NIC-2003 features a ruggedized design with a metal enclosure and robust mounting options, ensuring stable operation in harsh factory environments where temperature fluctuations, electrical noise, and physical stress are common challenges. Its **10/100 Mbps Ethernet port** delivers high-speed, full-duplex communication, supporting both IPv4 and IPv6 protocols while maintaining low-latency performance for time-sensitive applications like motion control, process automation, or distributed control systems. The module s **KC3315-01 firmware revision (R0157185-S21)** incorporates the latest enhancements in security, reliability, and compatibility, including support for advanced network diagnostics, automatic IP address assignment via DHCP, and seamless integration with Rockwell s Studio 5000 software suite for configuration, monitoring, and troubleshooting. Whether deployed in a manufacturing plant, oil and gas facility, or water treatment system, this network interface module ensures consistent, high-bandwidth connectivity, enabling real-time data acquisition, remote monitoring, and seamless integration with SCADA systems, ERP platforms, or cloud-based analytics. With its **N353 certification**, this unit adheres to strict quality and performance standards, making it a dependable choice for mission-critical automation applications where uptime and data integrity are paramount.

### **Pros and Cons of buying a Allen-Bradley NIC-2003 Network Module (KC3315-01, R0157185-S21, CA56103008, N353)**

#### **Pros**

1. **Compatibility with Ethernet/IP Networks**

The NIC-2003 is a well-established module designed specifically for Allen-Bradley PLCs to communicate over Ethernet/IP, a widely used industrial protocol. This ensures seamless integration with most modern control systems, including newer CompactLogix, ControlLogix, and Micro800 PLCs.

2. **Reliable Performance**

Allen-Bradley (now part of Rockwell Automation) is a trusted brand in industrial automation, known for durable and dependable hardware. The NIC-2003 has been in use for years, with a proven track record in stable network communication.

3. **Easy Installation and Configuration**

The module is designed for straightforward installation on Allen-Bradley backplanes (e.g., 1756-A5 or 1756-B16). Configuration is typically done through RSLogix 5000 or Studio 5000 software, with minimal additional setup required beyond basic IP addressing.

4. **Supports Multiple Network Topologies**

The NIC-2003 can operate in both **managed** and **unmanaged** Ethernet/IP networks, making it versatile for different industrial environments. It also supports **VLAN tagging** (via firmware updates), which can be useful in larger networks with segmentation needs.

5. **Backward and Forward Compatibility**

While newer PLCs (e.g., Micro800) may use different communication methods, the NIC-2003 remains compatible with older systems (e.g., SLC 500, PLC-5) that still rely on Ethernet/IP. This makes it a good choice for legacy system upgrades.

6. **Cost-Effective for Basic Networking Needs**

Compared to newer, more advanced Ethernet modules (e.g., 1756-EN2T or 1756-ENBT), the NIC-2003 is often **less expensive**, making it a budget-friendly option for simple Ethernet/IP communication without advanced features like PoE or dual ports.

7. **Wide Availability of Spare Parts**

Being an older but still widely used model, finding replacements or spare parts is relatively easy, especially from authorized distributors or eBay sellers. This reduces long-term downtime risks.

8. **Supports Ethernet/IP Scanning and Messaging**

The module fully supports **Ethernet/IP scanning** (for device discovery) and **messaging** (for direct PLC-to-PLC communication), which is essential for many industrial applications.

---

#### **Cons**

1. **Limited to Single-Port Ethernet**

The NIC-2003 has **only one Ethernet port**, which can be a limitation in networks requiring redundancy (e.g., failover) or multiple device connections. For such cases, a **1756-EN2T (dual-port)** or **1756-ENBT (PoE-capable)** module would be better.

2. **No Power over Ethernet (PoE) Support**

Unlike newer modules (e.g., 1756-ENBT), the NIC-2003 **does not support PoE**, meaning it requires a separate power supply or must be powered via the PLC backplane. This can be inconvenient in installations where PoE is preferred.

3. **Outdated Firmware and Limited Updates**

Allen-Bradley has largely phased out major firmware updates for older modules like the NIC-2003. While it remains functional, some newer network security or performance optimizations may not be available.

4. **No Built-in Security Features**

Modern industrial networks often require **VLAN support, MAC address filtering, or basic cybersecurity measures**. While the NIC-2003 can be configured for VLANs (via firmware), it lacks advanced security features found in newer modules.

5. **Potential Compatibility Issues with Very New PLCs**

While the NIC-2003 works with most Allen-Bradley PLCs, **very recent models** (e.g., some Micro800 or newer CompactLogix variants) may have optimized communication protocols that slightly favor newer Ethernet modules. Testing may be required in some cases.

6. **No Built-in Diagnostics Beyond Basic Link Status**

Unlike some newer modules, the NIC-2003 provides **limited diagnostic information** (e.g., link status, speed, duplex). Advanced troubleshooting may require additional tools or manual checks.

7. **Physical Size and Backplane Compatibility**

The NIC-2003 requires a **1756-A5 or 1756-B16 backplane slot**, which may not be available in all PLC models. If upgrading from an older PLC (e.g., PLC-5), additional wiring or adapter modules may be needed.

8. **Potential Obsolescence Risks**

While not yet obsolete, the NIC-2003 is **not actively supported** by Rockwell Automation. Future software updates or replacements may not be guaranteed, which could be a concern for long-term projects.

---

### **Conclusion**

The **Allen-Bradley NIC-2003 (KC3315-01)** is a **reliable, cost-effective choice** for basic Ethernet/IP networking in Allen-Bradley PLC systems, particularly for **legacy or mid-sized installations** where simplicity and compatibility are priorities. It excels in environments where:

- A **single Ethernet port** is sufficient.

- **No advanced networking features** (PoE, dual ports, VLANs beyond basic) are required.

- **Budget constraints** make newer modules unnecessary.

- **Wide availability** of spare parts is important.

However, if your application demands **redundancy, PoE, advanced security, or dual-port connectivity**, a newer module (e.g., **1756-EN2T, 1756-ENBT, or 1756-NET-ETH**) would be a better long-term investment.

---

### **Recommendation**

- You need a **simple, reliable Ethernet/IP module** for an existing Allen-Bradley system.

- Your network does **not require redundancy or PoE**.

- You are working with **legacy PLCs (SLC 500, PLC-5, older CompactLogix)** where newer modules may not offer significant advantages.

- Cost is a **primary concern**, and you can accept its limitations.

- You require **dual Ethernet ports** for redundancy.

- Your network needs **PoE or advanced VLAN security**.

- You are integrating with **very new PLCs** (e.g., latest Micro800 or ControlLogix) where newer modules may offer better performance.

- You anticipate **long-term use** and want future-proofing with potential firmware updates.

- For **single-port, basic Ethernet/IP**: **1756-EN2T** (dual-port, more reliable).

- For **PoE and redundancy**: **1756-ENBT** or **1756-NET-ETH**.

- For **budget constraints with slightly better features**: **1756-AENT** (if available).

If you confirm that your use case aligns with the NIC-2003 s strengths, it remains a **solid, functional choice** for many industrial applications. Otherwise, investing in a newer module may provide better long-term reliability and flexibility.

Details:

Ideal for use in various industrial automation applications, this module helps streamline operations and enhance overall system functionality. The NETWORK NIC-2003 KC3315-01 BOARD is a PLC peripheral module designed for industrial automation and motion control systems. Manufactured by Allen-Bradley, this product is compatible with the PLC-5 controller platform.

part #: nic2003 prices

• $14.99-$39.99

specifications sensoindustria:

• brand: Allen-bradley
• mpn: Nic-2003
• part type: Board
• controller platform: Plc-5

general sensoindustria:

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

shipping sensoindustria:

• carrier: USPS
• class: Standard
• service: USPS Ground Advantage
• type: Fixed
• cost: $0.00
• transit: 5-10 Days

offer sensoindustria:

• started: May 23, 2026
• sold: 0
• options: Ship-to-home
• quantity: 1
• best offers: True
• availability: In Stock

seller sensoindustria:

• rating: 98.9%
• city: Champaign, Illinois
• # reviews: 1664

returns sensoindustria:

• method: Money back
• time: 60 Days
• policy: Returns Accepted
• paid by: Buyer

payments sensoindustria:

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

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