ALLEN BRADLEY 1783-USP8T Plc Modules

( Brand: Allen Bradley ), ( Manufacturer Part Number: 1783-USP8T ), ( Part Type: Module )

Review ALLEN BRADLEY 1783usp8t Used

The **Allen-Bradley 1783-USP8T** is a high-performance, modular **Universal Serial Bus (USB) to Serial Port (RS-232) converter** designed for seamless integration into industrial automation, control systems, and data acquisition applications. Part of Rockwell Automation s **CompactLogix and ControlLogix** family of devices, this compact yet robust converter facilitates reliable communication between USB-equipped PCs, laptops, or handheld devices and legacy RS-232 serial equipment, ensuring backward compatibility in modernized or hybrid automation environments. Engineered with industrial-grade durability, the **1783-USP8T** operates within a wide temperature range of **-40 C to 70 C**, making it ideal for harsh factory floors, outdoor installations, or environments exposed to temperature fluctuations. Its **8-pin D-sub (DB9) male connector** provides a standard RS-232 interface, supporting data transfer rates up to **115.2 kbps**, while its **USB 2.0 Full-Speed** interface (compatible with USB 1.1) ensures fast, low-latency data exchange with host systems. The device features **auto-detection of USB power** and **auto-baud rate configuration**, simplifying setup and reducing configuration errors, while its **plug-and-play compatibility** with Windows, Linux, and other operating systems minimizes integration complexity. Built with **Allen-Bradley s reputation for reliability**, the **1783-USP8T** incorporates **galvanic isolation** between the USB and RS-232 ports, protecting sensitive equipment from voltage spikes, ground loops, and electrical noise a critical feature in industrial settings where power surges and electromagnetic interference are common. Additionally, its **compact, DIN-rail-mountable design** allows for easy installation in control panels, enclosures, or directly on machinery, optimizing space in crowded automation environments. Whether used for **device programming, data logging, HMI (Human-Machine Interface) communication, or troubleshooting**, this converter serves as a bridge between modern computing systems and older serial-based devices, ensuring smooth operation in both new and legacy automation architectures. Its **low-power consumption** and **long-term availability** further enhance its appeal for long-term industrial deployments, making it a trusted solution for engineers and technicians seeking a dependable, high-performance serial-to-USB interface.

### **Pros and Cons of buying a Allen-Bradley 1783-USP8T (1783USP8T) Universal Serial Port Module**

The **Allen-Bradley 1783-USP8T** is a universal serial port module used in PLC (Programmable Logic Controller) systems to enable communication between a PLC and other devices via serial interfaces. Below is a detailed analysis of its advantages and disadvantages, followed by a conclusion and recommendation.

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### **Pros**

1. **Versatile Communication Interface**

- Supports multiple serial communication protocols, including **RS-232, RS-422, and RS-485**, making it compatible with a wide range of devices such as HMI terminals, scanners, bar code readers, and industrial printers.

- Can be configured for **asynchronous or synchronous communication**, providing flexibility in data transfer requirements.

2. **High Reliability and Industrial-Grade Build**

- Designed for harsh industrial environments, with robust construction to withstand temperature fluctuations, electrical noise, and mechanical stress.

- Allen-Bradley (now part of Rockwell Automation) is a trusted brand known for durable and long-lasting components.

3. **Easy Integration with Rockwell Automation Systems**

- Seamlessly integrates with **Rockwell PLCs (e.g., ControlLogix, CompactLogix, Micro800)** and other Allen-Bradley products, reducing compatibility issues.

- Supports **Rockwell s structured text and ladder logic programming**, simplifying implementation in existing systems.

4. **Modular and Upgradable**

- Can be used in **1756-A8 or 1756-A16 I/O chassis**, allowing for easy expansion of communication capabilities without replacing the entire system.

- Compatible with newer Rockwell software tools like **Studio 5000**, ensuring long-term support.

5. **Cost-Effective for Serial Communication Needs**

- While not the cheapest option, it is often more cost-effective than purchasing separate communication adapters or converters for different protocols.

- Reduces the need for additional hardware (e.g., USB-to-serial converters) when interfacing with legacy devices.

6. **Supports Multiple Baud Rates and Data Formats**

- Configurable for various **baud rates (up to 115,200 bps)** and data formats (e.g., 7E1, 8N1), accommodating different device requirements.

- Can be programmed for **odd/even parity, stop bits, and flow control**, ensuring compatibility with diverse serial devices.

7. **Documentation and Technical Support**

- Allen-Bradley provides **comprehensive manuals, data sheets, and technical support**, making troubleshooting and configuration easier.

- Rockwell Automation has a strong global support network for industrial automation components.

---

### **Cons**

1. **Limited to Rockwell Ecosystem**

- Primarily designed for **Rockwell PLCs and automation systems**, which may not be ideal if integrating with non-Rockwell devices (e.g., Siemens, Schneider, or third-party PLCs).

- Requires **Rockwell software (e.g., RSLogix, Studio 5000)** for configuration, which may not be available or compatible with alternative platforms.

2. **Higher Upfront Cost Compared to Alternatives**

- More expensive than **generic USB-to-serial adapters or aftermarket serial modules** from non-industrial brands.

- For simple applications, a **cheaper universal serial adapter** might suffice without the industrial-grade features.

3. **Configuration Complexity**

- Requires **proper programming and parameter setup** in the PLC to ensure correct communication with external devices.

- Misconfiguration can lead to **data corruption, timeouts, or communication failures**, requiring technical expertise to resolve.

4. **Physical Size and Installation Constraints**

- Takes up a **slot in an I/O chassis**, which may limit expansion options in smaller systems.

- Not a **standalone device**; it must be installed in a compatible Allen-Bradley rack, adding installation complexity.

5. **Deprecation Risk with Newer Systems**

- While still supported, newer Rockwell systems (e.g., **Studio 5000 Logix Designer**) may favor **Ethernet/IP or wireless communication** over serial ports.

- Future-proofing may require additional investments in **Ethernet-based communication modules** if serial-only setups are phased out.

6. **Limited to 8 Serial Ports (If Used in a Chassis)**

- The **1783-USP8T** supports **8 serial ports per module**, but if multiple modules are needed, the cost and complexity increase.

- For high-density serial applications, other solutions (e.g., **serial-to-Ethernet converters**) might be more scalable.

7. **Potential Latency in Industrial Environments**

- Serial communication, while reliable, can introduce **higher latency** compared to **Ethernet/IP or PROFINET**, which may be critical for real-time applications.

---

### **Conclusion**

The **Allen-Bradley 1783-USP8T** is a **high-quality, reliable, and versatile** serial communication module ideal for industrial applications where **Rockwell PLCs are in use**. Its strengths lie in **durability, ease of integration with Rockwell systems, and support for multiple serial protocols**, making it a solid choice for environments requiring **long-term stability and compatibility**.

- You are working with **non-Rockwell automation systems** (e.g., Siemens, Schneider).

- Your application requires **high-speed, low-latency communication** (Ethernet/IP may be better).

- You need a **budget-friendly solution** for simple serial communication (generic adapters may suffice).

- Your system is **small-scale or non-industrial**, where the cost and complexity outweigh the benefits.

---

### **Recommendation**

You are using **Rockwell PLCs (ControlLogix, CompactLogix, Micro800)** and need **reliable serial communication** with HMIs, scanners, or printers.

Your application requires **industrial-grade durability** in harsh environments.

You want a **single module** that supports **multiple serial protocols** without additional hardware.

You have **existing Rockwell infrastructure** and need seamless integration.

You are working with **non-Rockwell systems** and need cross-platform compatibility.

Your budget is tight, and a **cheaper generic serial adapter** would work.

Your application demands **high-speed, real-time communication** (consider Ethernet/IP modules instead).

You are setting up a **small, non-industrial** system where serial communication is not critical.

- For **Rockwell systems with Ethernet needs**, explore **1756-EN2T (Ethernet/IP module)**.

- For **non-Rockwell systems**, look into **third-party serial-to-Ethernet converters** (e.g., Advantech, Moxa).

- For **budget-friendly serial solutions**, consider **USB-to-serial adapters** (e.g., FTDI-based) if industrial-grade reliability is not required.

The **1783-USP8T is a well-suited choice for Rockwell-based industrial automation** where serial communication is essential. Its reliability and compatibility justify the cost for users deeply embedded in the Rockwell ecosystem. However, those outside this environment should evaluate alternatives based on their specific requirements.

Details:

Sells new and surplus product develops channels to purchase such. ALLEN BRADLEY 1783-USP8T / 1783USP8T USED SWITCH, STRATIX 21 UNMANAGED, IP30, 8 CONDUCTORS, 100 MBIT/S, RJ45, DIN RAIL MOUNT, REPLACES 1783-US8T. 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 #: 1783usp8t prices

• $231.00-$268.00

specifications sensoindustria:

• brand: Allen Bradley
• mpn: 1783-usp8t
• part type: Module

payments sensoindustria:

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• credit card: Discover
• wallet: Google-pay

seller sensoindustria:

• # reviews: 194839
• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.6%

returns sensoindustria:

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

shipping sensoindustria:

• cost: $12.90
• type: Fixed
• transit: 29-33 Days
• class: Standard
• service: Standard

offer sensoindustria:

• availability: In Stock
• sold: 0
• quantity: 1
• started: March 16, 2026
• options: Ship-to-home

general sensoindustria:

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

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