Beckhoff CX2550-0279 CX2000 Series USB Extender 2.0 Transmitter Module

Description

The Beckhoff CX2550-0279 functions as a direct system-bus expansion module designed for CX20xx Embedded PCs, enabling remote USB 2.0 signal transmission up to 50 meters. This transmitter module mounts directly to the left-hand side of a CX20xx CPU block, converting standard internal USB lines into a serialized differential signal suitable for long-distance runs over standard Ethernet-style physical media. This setup is specifically optimized for connecting control panels such as the CP29xx-0000 series without signal degradation or latency spikes, ensuring seamless peripheral integration in complex industrial environments.

Key Features

• Dedicated 1 x USB Extended 2.0 interface utilizing a rugged RJ45 connection port.
• Reliable signal extension up to a maximum distance of 50 meters over standard Cat.5E or higher shielded cabling.
• Native system bus integration drawing power directly through preceding CX2100-0xxx power supply units.
• On-board LED diagnostic indicators for real-time status validation (Power, Host, Activity, and Link status).
• Compact 24 mm form factor designed for high-density DIN-rail mounting configurations.

Applications

• Connecting decentralized HMI and operator screens (CP29xx-0000 series) in scattered manufacturing cells.
• Extending USB diagnostic interfaces outside enclosed, high-voltage electrical panels.
• Facilitating clean wiring routing in modern modular production lines and material handling facilities.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

This module behaves specifically as a Point-to-Point Transmitter (Tx) and must be paired with an appropriate receiver, typically integrated directly into Beckhoff CP29xx-0000 Control Panels or external receiver boxes. It is physically designed to slide and snap into place on the left-side expansion slot of the CX20xx series. Ensure your CPU configuration in TwinCAT recognizes the additional module on the PC-system bus before commissioning.

Application Pitfalls & Engineering Notes

A common error on-site is treating the physical RJ45 interface on the front of this unit as an Ethernet network port. Patching this connection into a standard LAN switch, router, or hub can cause immediate electrical damage to either the network hardware or the internal transceiver circuitry of the controller. Keep the extension path strictly point-to-point.

Commissioning & Wiring Tips

For transmissions reaching near the 50-meter limit, always use high-quality, double-shielded copper cabling (S/FTP Cat.5E or Cat.6). Avoid routing this physical-layer run in close proximity to high-frequency variable frequency drive (VFD) output cables or high-voltage lines, as noise coupling on the differential lines can cause momentary dropouts in panel mouse/keyboard and touch signals.

Installation Guidelines