Siemens 6AV3637-1LL00-0AX1 SIMATIC MP 370 15" Touch Panel – Legacy HMI Operator Panel, WinCC Flexible, 24 V DC

Siemens 6AV3637-1LL00-0AX1 SIMATIC MP 370 15″ Touch Panel – Legacy HMI Operator Panel, WinCC Flexible, 24 V DC

Product Overview

The Siemens 6AV3637-1LL00-0AX1 is a SIMATIC MP 370 15" Touch operator panel, part of Siemens' legacy Multi Panel (MP) family that preceded today's Comfort and Unified lines. The MP 370 series was Siemens' high-end HMI offering in the early 2000s, positioned above the MP 270 and succeeded by the MP 377 (6AV6647‑…) before the Comfort Panel (6AV2124‑…) architecture took over. The Siemens 6AV3637-1LL00-0AX1 specifically denotes the 15-inch TFT touch-only variant in its later hardware revision (-0AX1), configured exclusively through SIMATIC WinCC Flexible 2004 SR2, 2005 or 2008 — it is not a TIA Portal-native device, which is precisely why it remains actively procured as a spare-part replacement in plants that have not yet migrated their visualization projects to the Comfort/Unified generation. Technically, the Siemens 6AV3637-1LL00-0AX1 delivers a 15-inch TFT display at 1024 × 768 resolution with 256 K colours, driven by an x86-based processor running Windows CE. It carries 8 MB load memory (configuration/project memory) and retentive memory for recipes, alarms and tags. Connectivity centres on a combined MPI/PROFIBUS DP interface up to 12 Mbps — the natural pairing for S7-300 and S7-400 PLCs that still dominate installed-base automation worldwide — supplemented by a configurable RS232/RS422/RS485 interface for third-party devices (drives, scales, printers, barcode readers), two USB host ports for keyboard/mouse/stick/printer, and a parallel printer port. The 24 V DC nominal supply, IP65 front bezel and 0 … +50 °C operating range place the Siemens 6AV3637-1LL00-0AX1 firmly in the door-mount industrial bracket for machine-level and cell-level visualisation. Although Siemens formally discontinued the MP 370 series years ago and the Siemens 6AV3637-1LL00-0AX1 is now spare-part status only, it continues to see strong demand in three scenarios: (1) direct replacement of a failed MP 370 15" on a validated line where re-engineering the WinCC Flexible project into TIA Portal is not authorised; (2) spares stock-building for long-lifecycle plants (steel, power, water, pharma) that run GMP-validated HMI projects on MP hardware; and (3) retrofit expansions where a sister machine already runs an MP 370 and adding a mismatched Comfort panel would break spare-part commonality. For these buyers, the Siemens 6AV3637-1LL00-0AX1 — whether sourced as New Surplus, Refurbished-Tested or Used-Tested — remains the correct SKU, and we supply it with functional verification against a WinCC Flexible download bench before dispatch.

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Technical Specifications

Parameter Name	Parameter Value
Product Model	6AV3637-1LL00-0AX1
Manufacturer	Siemens
Product Type	HMI Touch Operator Panel (SIMATIC MP 370 series)
Display	15″ TFT, 256 K colours
Resolution	1024 × 768 pixels
Operating System	Windows CE (configured via WinCC Flexible)
Configuration Memory	8 MB (load memory)
Supply Voltage	24 V DC (19.2 – 28.8 V range)
Interfaces	MPI / PROFIBUS DP (≤12 Mbps), RS232/422/485 configurable, 2× USB host, 1× parallel printer
Front Protection	IP65
Operating Temperature	0 °C to +50 °C
Mounting	Door cut-out, portrait or landscape
Config Software	WinCC Flexible 2004 SR2 / 2005 / 2008

Main Features and Advantages

Legacy project compatibility without re-engineering: The single strongest reason to specify the Siemens 6AV3637-1LL00-0AX1 today is that it preserves the WinCC Flexible project runtime exactly as originally deployed. Plants that validated an MP 370 HMI under GMP, FDA 21 CFR Part 11, or IEC 61511 change-control often cannot justify recompiling the visualization into TIA Portal / WinCC Comfort just to replace a failed panel — the validation packet, screen captures, alarm logs and audit trail would all need re-approval. Supplying a tested Siemens 6AV3637-1LL00-0AX1 as a like-for-like swap keeps the project binary, the OS image and the touch-calibration file identical, turning a potential weeks-long requalification event into a same-day panel exchange.

MPI/PROFIBUS DP native integration: The Siemens 6AV3637-1LL00-0AX1 carries a 12 Mbps MPI/PROFIBUS DP port that auto-negotiates with S7-300 and S7-400 PLCs on the same bus without gateway hardware. For legacy lines where the PLC-side network is still MPI (common in machines built 2000–2010), this is a decisive advantage over modern Comfort panels, which dropped native MPI in some generations or require external CP cards. The PROFIBUS DP side also lets the panel ride a DP-V1 slave network for faster cyclic data exchange when the project is tuned that way.

15-inch TFT readability with 256 K colour depth: At 1024 × 768 the Siemens 6AV3637-1LL00-0AX1 offers comfortably more canvas than the 12″ MP 370 (800 × 600) and matches the widescreen 15″ Comfort’s vertical resolution while using the classic 4:3 aspect ratio — important because WinCC Flexible projects authored for 4:3 do not scale cleanly to 16:9 without layout rework. For legacy projects, keeping the 4:3 native panel avoids stretching or letter-boxing artifacts. The 256 K colour palette handles photographic machine images, gradient bar graphs and colour-coded alarm states without the banding that plagued the earlier MP 270 (256-colour) generation.

Interface richness for mixed-era peripherals: Few modern HMIs still carry a parallel printer port and a configurable RS232/422/485 block alongside USB hosts, but the Siemens 6AV3637-1LL00-0AX1 does. This matters on older lines where a dot-matrix or thermal printer is hard-wired to the panel for batch-report printing, or where a legacy weigh scale talks Modbus RTU over RS485 to the HMI directly. The two USB 2.0 hosts accept a keyboard/mouse combo for maintenance access and a USB stick for project backup/restore — a workflow familiar to every MP-series maintenance technician.

Robust mechanical envelope: The IP65 front, 24 V DC supply and 0–50 °C ambient range mean the Siemens 6AV3637-1LL00-0AX1 drops into the same NEMA-4/12 door cut-out as its MP 270 predecessor and the later MP 377, so cabinet modifications are rarely needed during a swap. The -0AX1 hardware revision also addressed a few component-level EOL substitutions from the original -0AX0, making surviving -0AX1 units the preferred spare over early-run -0AX0 stock.

Clear migration awareness: We don’t oversell the Siemens 6AV3637-1LL00-0AX1 as a forward-looking choice — it’s a preservation choice. Buyers get transparent advice on the succession path: MP 370 (-0AX1) → MP 377 15″ Touch (6AV6647‑2AJ11‑3AX0) → TP1500 Comfort (6AV2124‑0QC02‑0AX0) → TP1500 Unified (6AV2128‑3GB06‑0AX1). If a plant is ready to re-engineer, we’ll say so; if they need to keep the line running unchanged, the Siemens 6AV3637-1LL00-0AX1 is the right procurement.