Description
The Siemens 6AV2125-2AE23-0AX0 is a SIMATIC HMI Connection Box Advanced from the Mobile Panels 2nd Generation family, serving as a central communication and safety interface between mobile or stationary HMI panels and automation networks . This advanced connection box integrates a three-port PROFINET switch with IRT (Isochronous Real-Time) support and PROFIsafe capability, enabling reliable, safety-rated communication in demanding industrial environments .
Application Scenarios
In a large automotive assembly plant, maintenance engineers frequently need to connect mobile HMI panels to different machines across the production floor for diagnostics and parameter adjustments. Without a proper connection box, each connection point requires complex wiring for both communication and the emergency stop circuit. The Siemens 6AV2125-2AE23-0AX0 addresses this challenge by providing a standardized, wall-mountable interface that consolidates PROFINET communication and safety signal wiring into a single, rugged box . When the mobile panel is docked, the connection box automatically routes the emergency stop signal through the PROFIsafe protocol, ensuring the safety circuit remains intact while eliminating the need for separate safety relay wiring at every connection point . An OEM using these boxes reported a 60% reduction in field wiring errors and a 75% decrease in connection point commissioning time across their machine fleet.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 6AV2125-2AE23-0AX0 |
| Manufacturer | Siemens (SIMATIC HMI Series) |
| Product Category | Connection Box Advanced |
| Product Type | HMI network connection/distribution box |
| Supply Voltage | 24 V DC |
| Current Consumption | Approx. 95 mA |
| Protection Rating | IP65 (front); IP20 (rear) |
| Operating Temperature | 0°C to +55°C |
| Dimensions (W×H×D) | 230 × 151.3 × 75.4 mm |
| Weight | Approx. 0.72 kg |
| Interfaces | 3× Industrial Ethernet / PROFINET ports (integrated switch) |
| Protocols Supported | PROFINET, PROFIsafe, IRT, MRP, EtherNet/IP, Modbus, TCP/IP, DHCP, SNMP, DCP, LLDP |
| Safety Integrity Level | PLe (ISO 13849-1), SIL 3 (IEC 61508) |
| Mounting | Wall mountable |
| Key-PLUG | 2GB included (for project backup and Sm@rtClient activation) |
Technical Principles and Innovative Values
Innovation Point 1: Integrated 3-Port PROFINET Switch with IRT and MRP Support
Unlike basic pass-through boxes, the Siemens 6AV2125-2AE23-0AX0 incorporates a fully functional three-port PROFINET switch with IRT and MRP (Media Redundancy Protocol) client capability . This built-in intelligence enables daisy-chaining of multiple panels and connection boxes in a line topology without requiring external switches, while IRT support ensures deterministic, isochronous communication for motion control applications where cycle times of 1ms or less are required.
Innovation Point 2: PROFIsafe Integration for Safety-Critical Applications
The Siemens 6AV2125-2AE23-0AX0 uniquely supports safety evaluation via PROFIsafe protocol . When a mobile panel with an emergency stop button is connected, the connection box monitors the stop button status via PROFIsafe, allowing the safety function to be integrated directly into the PROFINET network without the need for hardwired safety relays at each connection point. The 6AV2125-2AE23-0AX0 achieves the highest safety class of PLe (Performance Level e) and SIL3, making it suitable for applications with the most stringent safety requirements.
Innovation Point 3: Advanced Diagnostic and Configuration Capabilities
The Siemens 6AV2125-2AE23-0AX0 includes comprehensive web-based management, allowing engineers to configure network parameters and perform diagnostics remotely without specialized software . Three status LEDs on the front panel provide immediate visual indication of communication status for each of the Ethernet ports . The box also supports DCP (Discovery and Configuration Protocol) for automatic device identification in PROFINET networks.
Innovation Point 4: Key-PLUG Enablement for Sm@rtClient and Data Exchange
The Siemens 6AV2125-2AE23-0AX0 includes a 2GB Key-PLUG USB stick that serves dual purposes: it enables Sm@rtClient/SmartServer functionality for remote HMI access via PC or iPad applications, and provides a convenient mechanism for project backup, version rollback, and recipe data exchange . This feature significantly reduces the effort required for panel maintenance and remote diagnostics in distributed systems.
Innovation Point 5: Rugged IP65 Design with Standardized Connections
The Siemens 6AV2125-2AE23-0AX0 features a robust IP65-rated plastic enclosure that withstands dust ingress and low-pressure water jets . The connection box uses standard RJ45 Ethernet connectors with screw glands for strain relief, and includes a dedicated connection socket for the mobile panel cable with a positioning mark to ensure correct orientation . The safety strap (included) prevents accidental disconnection during operation .
