Application Scenarios
On a large automotive body-shop press line in Germany, a 3200-ton crossbar transfer press required operators to jog the ram, thread coil, and inspect tooling from multiple vantage points—none of which were served by the fixed cabinet-mounted Comfort Panel alone. Installing a fixed secondary HMI at each station would have meant long cable runs, duplicate projects, and zero safety enable outside the cabinet. Instead, the integrator deployed the 6AV2125-2GB23-0AX0 in a wall-mounted docking station at the cell entry; the operator un-docks it, carries it onto the platform, and retains full visibility of press position, clamp status, and fault buffers while walking. The two 3-position enable switches and the illuminated E-stop on the 6AV2125-2GB23-0AX0 are wired through PROFIsafe, meaning the operator can hold the “enable” mid-position to allow jog motion—and if they release (fall) or squeeze fully (panic), the SIL 2 safety chain trips the press drive within the SIL-rated response time. The line reported a 30 % reduction in setup time per die change and, more critically, zero near-miss incidents during manual mode over 18 months, since the safety-rated controls now traveled with the operator instead of staying at the cabinet.
Parameter
| Main Parameters | Value / Description |
|---|---|
| Product Model | 6AV2125-2GB23-0AX0 |
| Manufacturer | Siemens (SIMATIC HMI) |
| Product Category | Safety Mobile Panel (KTP700F Mobile) |
| Display | 7.0″ widescreen TFT, 800 × 480 px (WVGA) |
| Colors | 16.7 M (24-bit true color) |
| Touch / Keys | Resistive analog touch + 8 function keys (F1–F8) |
| Safety Elements | 2 × 3-position enable switches, 1 × illuminated E-stop, 1 × key switch |
| Safety Rating | SIL 2 (IEC 61508) / PL d (ISO 13849-1) via PROFIsafe |
| Processor / Memory | ARM-based; 12 MB user flash + RAM backing |
| Interfaces | 1 × PROFINET (IRT-capable), 1 × USB 2.0, 1 × SD/MMC slot |
| Supply Voltage | 24 V DC (19.2 … 28.8 V), typ. 350 mA / ~8.5 W |
| Protection | IP65 front (dust-tight, low-pressure jets), IP54 rear |
| Config. Software | WinCC Comfort V13 SP1+ / TIA Portal |
| Dimensions (W × H × D) | 248.4 × 194.9 × 89 mm |
| Weight | Approx. 1.3 kg (excl. docking/cable) |
Technical Principles and Innovative Values
- Innovation Point 1: Safety and HMI Converged in One Handheld. Traditional setups separate the “viewing panel” from the “safety pendant”—operators carry a separate teach pendant for enables while squinting at a distant HMI. The 6AV2125-2GB23-0AX0 merges both: the PROFIsafe-enabled enable switches and E-stop share the same PROFINET telegram as the HMI tags, eliminating parallel hard-wired safety looms and reducing cabinet I/O count.
- Innovation Point 2: Docking-Cradle Architecture. The panel itself has no permanent cable—power, PROFINET, and USB pass through a click-in docking station (wall-, column-, or arm-mounted). The 6AV2125-2GB23-0AX0 auto-connects on dock and can be yanked out for carry mode in seconds, making shift-handover and multi-cell sharing practical (one panel serves three cells on rotation).
- Innovation Point 3: Multi-Protocol Openness. Beyond Siemens S7, the 6AV2125-2GB23-0AX0 natively supports EtherNet/IP (Rockwell) and Modbus TCP alongside PROFINET, plus OPC UA client/server. This makes it viable as a cross-vendor mobile window into mixed-brand lines—common in retrofit pharma and food lines where a Rockwell Logix PLC talks to a Siemens drive train.
Application Cases and Industry Value
Case 1 – Robotic Welding Cell (North America, 2021). A Tier-1 exhaust-manifold welder ran six Fanuc Arc Mate cells, each previously equipped with a fixed Basic Panel plus a hard-wired safety pendant clipped to the fence. The pendant cable frayed repeatedly at the entry gate, causing nuisance safe-torque-off trips. They replaced the fixed panel + pendant combo with a 6AV2125-2GB23-0AX0 talking EtherNet/IP to the Fanuc R-30iB controller and PROFIsafe to a Siemens F-CPU that owned the cell light curtain. The operator now carries one device: jogs the robot from the rear of the cell via the touchscreen, holds the 3-position enable to authorize motion, and hits the mushroom if a tip-change goes wrong. Cable-fray incidents dropped to zero, and the plant standardized the 6AV2125-2GB23-0AX0 across 14 cells.
Case 2 – Pharmaceutical Cartoning Line (Switzerland, 2022). During format changeovers on a blister-to-carton infeed, mechanics had to crawl under the servo gantry to reset jams—impossible to see the fixed HMI. Mounting a docking station on a floor pedestal and issuing a 6AV2125-2GB23-0AX0 let the mechanic carry the panel under the gantry, acknowledge the jam photo-eye, and jog the servo 2 mm—all while keeping one hand on the safety enable. Validation documentation noted that the SIL 2 enable satisfied the site’s “manual intervention in auto” risk assessment without additional light-curtain muting logic.
Related Product Combination Solutions
The 6AV2125-2GB23-0AX0 sits in the Siemens mobile-operator ecosystem; commonly paired models include:
- 6AV2125-2AA23-0AX0 (KTP700 Mobile) – Non-safety variant of the same 7″ handheld; choose this if your cell already has a separate safety pendant and you only need portable visualization.
- 6AV2125-2JB23-0AX0 (KTP900F Mobile) – 9″ safety mobile panel with larger canvas for more tags/graphs; upgrade path when the 7″ screen feels cramped.
- 6AV2124-0GC01-0AX0 (KTP700F Comfort, fixed) – Fixed (panel-mount) 7″ safety HMI for the same SIL 2 / PL d rating if the application doesn’t require portability.
- 6AV2181-4XP00-0AX0 (Mobile Panel Docking Station, Basic) – Wall/column cradle supplying 24 V + PROFINET to the 6AV2125-2GB23-0AX0; one cell often needs 2 docks (entry + far end) sharing one panel.
- 6AV2181-4XB00-0AX0 (Charging Cradle, wireless variant) – If you deploy the wireless version of the KTP700F Mobile, this is the inductive charging home base.
- 6AU… / 6SL… series SINAMICS drives – The 6AV2125-2GB23-0AX0 often acts as the local window into SINAMICS S120/G120 drive racks during commissioning, displaying r0061 actual speed, fault buffers, and BI tracing via PROFINET.
