Siemens txb1.pbus Interface Module

Siemens TXB1.PBUS P-Bus Interface Module is a compact power-and-communication hub for the Desigo TX-I/O system, positioned between the Desigo automation station and TX-I/O modules on the P-Bus. It provides a dedicated 24 V DC power supply to feed TX-I/O modules and field devices on the TX-I/O bus, helping to simplify installation by consolidating bus power in a single BIM. A USB port is included for service tooling and configuration, allowing quick commissioning and on-site diagnostics with a laptop or service tool. A status LED labeled DC 24 V module supply OK indicates when the module’s power supply is functioning, enabling quick verification of power availability to the TX-I/O network. The TXB1.PBUS is designed for Desigo TX-I/O installations, serving as the interface that carries both the power and the P-Bus communications to TX-I/O modules, and is typically used in building automation tasks such as HVAC control, lighting control, and energy management where centralized TX-I/O power and bus integrity are required.