Free Shipping Across the USA — Worldwide Delivery Available!
PALM Parts Solution
AccountQuote
In Stock Fast Shipping Available
Allen-Bradley 1203-USB Communication Adapter for DH-485 networks

*Image shown is a representation only. Actual product may vary.

Allen-Bradley 1203-USB

by Allen-Bradley

Read verified buyer reviews ↓

OverviewBridge the divide between your contemporary USB-equipped devices and established DH-485 networks using the Allen-Bradley 1203-USB Communication Adapter. This crucial interface module delivers a sturdy and dependable connection, enabling smooth data exchange between your computer and Allen-Bradley Programmable Logic Controllers (PLCs) along with other compatible industrial equipment. Engineered for both effectiveness and user-friendliness, the 1203-USB serves as the perfect solution for vital tasks such as system diagnostics, uploading and downloading PLC programs, and continuous monitoring of industrial automation operations that utilize the proven DH-485 protocol. Crafted to meet rigorous industrial specifications, the 1203-USB integrates effortlessly into your current setup, drawing power directly from the USB port without needing an external supply. Its compact and resilient construction guarantees portability and durability, making it an indispensable asset for maintenance experts, engineers, and technicians. Boost productivity and streamline your processes with this essential communication tool from Allen-Bradley.Key Features Extensive USB Compatibility: Provides a direct and widely supported connection between your computer and industrial automation systems. Dedicated DH-485 Protocol Support: Guarantees consistent and dependable communication with Allen-Bradley controllers and devices using the robust DH-485 protocol. Simple Plug-and-Play Setup: Facilitates quick installation with instant functionality, eliminating the need for an external power source and decreasing configuration time. Compact and Portable Design: Its small footprint makes it exceptionally convenient for transport and deployment in diverse industrial environments. Intuitive LED Indicators: Offers clear visual feedback on connection status, significantly assisting in rapid diagnostics and troubleshooting. Industrial-Grade Durability: Constructed to withstand challenging industrial conditions, ensuring long-term performance and reliability. Broad Driver Compatibility: Works with various operating systems, ensuring widespread usability across different computing platforms. Technical Specifications Model: 1203-USB Type: USB to DH-485 Communication Adapter Protocol: DH-485 Connectors: USB Type A to DH-485 5-pin terminal block Operating Temperature: 0°C to 60°C (32°F to 140°F) Storage Temperature: -40°C to 85°C (32°F to 185°F) Operating Humidity: 5% to 95% non-condensing Power: Powered via USB port (no external power required) Compatible Equipment: Seamlessly integrates with PLCs, HMIs, and other Allen-Bradley devices supporting DH-485 communication. Applications PLC Programming and Monitoring: Essential for configuring, updating, and real-time oversight of PLC systems employing DH-485. Industrial Network Integration: Perfect for connecting personal computers into Allen-Bradley focused industrial or factory automation setups. System Upkeep and Diagnostics: A vital instrument for technicians and engineers to efficiently maintain, troubleshoot, and resolve issues in automated systems relying on DH-485 networks. Data Acquisition and Logging: Enables the capture of critical operational information from DH-485 devices for analysis and historical record-keeping. Training and Educational Settings: Ideal for academic and vocational environments when learning about and interacting with Allen-Bradley DH-485 systems. Why Choose This Model?Benefit from the renowned reliability and performance associated with the Allen-Bradley brand, ensuring long-lasting operation. Effortlessly bridge the gap between contemporary USB devices and established DH-485 industrial control systems with ease. The integrated LED indicators and robust connection provide fast diagnostic insights, minimizing downtime.Order NowEnhance your industrial automation capabilities today. Purchase the Allen-Bradley 1203-USB Communication Adapter and experience reliable, seamless communication between your modern devices and existing DH-485 networks.FAQWhat is the primary function of the Allen-Bradley 1203-USB?It acts as a communication bridge, enabling modern USB-equipped devices like PCs to connect and exchange data with industrial equipment that uses the older DH-485 protocol.Does the 1203-USB require a separate power source?No, it is conveniently powered directly through the USB port of your connected device, eliminating the need for an external power supply.What types of devices are compatible with this adapter?The 1203-USB works seamlessly with Allen-Bradley PLCs, HMIs, and other industrial hardware that support DH-485 communication.Can this adapter be used for troubleshooting industrial systems?Absolutely, it is an essential tool for technicians and engineers to diagnose and resolve issues in automated systems that rely on DH-485 networks.Is the Allen-Bradley 1203-USB built for harsh industrial environments?Yes, it features a robust and durable design specifically engineered to withstand demanding industrial conditions, ensuring long-term reliability and performance.

🇺🇸 Ships from our Florida warehouse
1-Year PALM Parts Warranty
CONDITION
$926.99
24 in stock

USA — Free FedEx Priority & UPS Ground · Worldwide shipping available

For more quantity please contact Customer Service

Experts Available 24/7 · 365
+1 (689) 263-1985
sales@palmpartssolution.com

Fast Shipping

Dispatched quickly on in-stock items via UPS, FedEx & DHL worldwide.

Availability

Thousands of parts in stock — ready for immediate dispatch from Florida.

Payment Flexibility

AMEX, Visa, MasterCard, PayPal, Discover and wire transfer accepted.

PRODUCT DETAILS

Allen-Bradley 1203-USB

Overview

This is a genuine Allen-Bradley component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 1203-USB
  • Type: USB to DH-485 Communication Adapter
  • Protocol: DH-485
  • Connectors: USB Type A to DH-485 5-pin terminal block
  • Operating Temperature: 0°C to 60°C (32°F to 140°F)
  • Storage Temperature: -40°C to 85°C (32°F to 185°F)
  • Operating Humidity: 5% to 95% non-condensing
  • Power: Powered via USB port (no external power required)
  • Compatible Equipment: Seamlessly integrates with PLCs, HMIs, and other Allen-Bradley devices supporting DH-485 communication.

Applications

  • PLC Programming and Monitoring: Essential for configuring, updating, and real-time oversight of PLC systems employing DH-485.
  • Industrial Network Integration: Perfect for connecting personal computers into Allen-Bradley focused industrial or factory automation setups.
  • System Upkeep and Diagnostics: A vital instrument for technicians and engineers to efficiently maintain, troubleshoot, and resolve issues in automated systems relying on DH-485 networks.
  • Data Acquisition and Logging: Enables the capture of critical operational information from DH-485 devices for analysis and historical record-keeping.
  • Training and Educational Settings: Ideal for academic and vocational environments when learning about and interacting with Allen-Bradley DH-485 systems.

Why Choose the 1203-USB?

Benefit from the renowned reliability and performance associated with the Allen-Bradley brand, ensuring long-lasting operation. Effortlessly bridge the gap between contemporary USB devices and established DH-485 industrial control systems with ease. The integrated LED indicators and robust connection provide fast diagnostic insights, minimizing downtime.

Availability & Shipping

  • In stock: 1203-USB ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1203-USB ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

Yes. Every 1203-USB we ship is sourced through trusted industrial channels and inspected before dispatch. PALM Parts Solution operates as an independent supplier, not an authorized distributor.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

EXPLORE MORE

Related Allen-Bradley resources

CUSTOMER REVIEWS

What Verified Buyers Say

No reviews yet for this product. Be the first verified buyer to share your experience — we email a review invitation after every purchase.

Independent Supplier Notice

PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

Are you an Electrical Distributor?Learn more about our distributor program

PALM Parts Solution sells used surplus products. PALM Parts Solution is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by PALM Parts Solution come with PALM Parts Solution's 1-Year Warranty and do not come with the original manufacturer's warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

Read full disclaimer →