Siemens 6AV2125-2AE23-0AX0 HMI Connection Box

The Siemens 6AV2125-2AE23-0AX0 SIMATIC HMI connection box Advanced is a wall‑mountable interface for Mobile Panels (2nd Generation) that enables PROFINET and PROFIsafe networking for HMI devices, including safety‑relay connections, emergency‑stop circuit bridging, and terminal detection. It integrates a switch, an MRP client, and IRT handling to streamline panel communication within a compact enclosure designed for industrial environments. The unit is powered from 24 V DC, rated IP65 for dust and water protection, and specified to operate across a temperature range of 0 to 55°C, making it suitable for harsh factory floors. This connection box is intended to be used with SIMATIC HMI Mobile Panels, providing reliable, on‑device connectivity to PLCs and safety systems while simplifying wiring and topology on wall‑mounted installations. It supports PROFINET and PROFIsafe for safe, deterministic data exchange and is compatible with WinCC/TIA Portal workflows (for example, WinCC/TIA Portal V14 SP1 Update 6); it serves as the central interface to connect the mobile panel to the broader automation network. With its integrated Ethernet switch and dedicated interfaces, the 6AV2125-2AE23-0AX0 helps streamline commissioning, diagnostics, and maintenance of mobile HMI setups on the plant floor.