SCHNEIDER TSXCUSBMBP – USB-to-Modbus Plus Adapter for Fast PLC Programming and Diagnostics

The SCHNEIDER TSXCUSBMBP is a compact USB-to-Modbus Plus (MB+) interface that lets modern laptops connect directly to Modicon/Schneider PLCs on an MB+ network. From my experience, this is the cleanest way to replace legacy SA85 ISA/PCI cards—no slot required, just plug in over USB and you’re online with your Quantum, 984, or Momentum systems in minutes. You might notice that commissioning time typically drops because drivers are straightforward and the MB+ link runs at a solid 1 Mbps.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• USB-to-MB+ bridge – Directly connects a PC’s USB port to a Modbus Plus network for online programming, monitoring, and data exchange.
• 1 Mbps Modbus Plus – Stable high-speed communication on shielded twisted pair for legacy and retrofit systems.
• Portable and field-friendly – No PCI card or external power supply; typically bus‑powered from the USB port.
• Driver support for Schneider software – Works with Schneider engineering tools in Windows environments via the standard MBX-style driver stack.
• Status indication – You can typically see link/traffic LEDs to confirm network activity and simplify troubleshooting on site.
• Backward compatibility – Useful across installed bases with Modicon Quantum, 984, and Momentum controllers still running MB+.

Technical Specifications

Application Fields

This adapter is commonly used by maintenance and retrofit teams who still rely on Modbus Plus infrastructure. Typical sites include:

• Process plants running Modicon Quantum and 984 PLCs on MB+ networks
• Food & Beverage lines using legacy Momentum drops with operator stations
• Pulp & Paper, Chemical, and Water/Wastewater facilities where MB+ is still the backbone
• OEM service teams doing program tweaks, backups, and diagnostics with modern laptops

Advantages & Value

• Keeps legacy systems productive – Direct access to MB+ saves the cost and risk of premature platform changes.
• Works with modern laptops – No PCI/ISA card needed; ideal for mobile service teams.
• Reduced downtime – Faster online diagnostics; from what we’ve seen, engineers typically get online in minutes.
• Lower total cost – One adapter supports multiple machines and projects across a site.
• Compatibility – Plays nicely with Schneider software stacks and established MB+ addressing schemes.

Installation & Maintenance

• Environment – Use in dry, clean areas; if inside a cabinet, allow ventilation and avoid mounting against high-heat sources.
• Wiring – Connect the USB to the laptop and the DB9 to the MB+ drop cable. Maintain shield continuity and proper network termination as per MB+ guidelines.
• Software setup – Install the Schneider MB+ driver, assign the node address, and verify with the network diagnostic tool before going online.
• Safety – Observe ESD precautions; avoid hot-plugging in hazardous environments; verify the MB+ trunk is healthy before adding a drop.
• Routine care – Keep connectors clean and strain-relieved. Check for driver/firmware updates periodically to maintain stability with newer OS builds.

Quality & Certifications

• Conformity: CE and RoHS; UL/cUL are commonly available on Schneider communication interfaces
• Manufacturer: Schneider Electric quality standards with robust industrial design
• Our warranty: 365 days from delivery; replacement or repair support based on evaluation

A Quick Field Note

One thing I appreciate is how it streamlines laptop swaps. A plant engineer told us they replaced an aging SA85 setup with the TSXCUSBMBP during a short maintenance window—driver install, address set, online in under 15 minutes. The reliability seems to be consistent across sites with mixed Quantum and Momentum nodes.