Siemens TP1500 Comfort HMI Replacement Guide

Overview

The Siemens SIMATIC HMI TP1500 Comfort has long served as a cornerstone of industrial visualization, offering high-performance control for complex, machine-level automation architectures. Featuring a premium 15.4-inch widescreen display, this high-end panel has provided operators with detailed diagnostic feedback, extensive scripting capability, and robust industrial connectivity.

However, as industrial automation transitions toward integrated digitalization, Edge computing, and web-ready architectures, Siemens has initiated the phase-out process for the classic Simatic Comfort Panel series. This transition introduces hardware scarcity, rising maintenance costs, and potential downtime risks for legacy systems.

This technical guide provides control engineers, system integrators, and maintenance supervisors with the complete roadmap required to replace or upgrade a failing or obsolete TP1500 Comfort panel. Whether your operational strategy requires a modern modern migration to the Simatic Unified platform or a drop-in legacy replacement to preserve legacy engineering investments, this document outlines the precise specifications, physical challenges, and configuration workflows needed to execute the transition seamlessly.

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Legacy Product Information

The standard TP1500 Comfort panel is built around a rugged die-cast aluminum front frame, designed to withstand hash environments including vibration, washdowns, and high ambient temperatures.

• Primary Part Number (MLFB): 6AV2124-0QC02-0AX0 (Standard Panel)
• Preceding/Alternative Part Numbers: 6AV2124-0QC13-0AX0 (Comfort Outdoor), 6AV2124-0QC24-0AX0 (Comfort INOX), 6AV2124-0QC02-0AX1
• Display Specifications: 15.4-inch active matrix TFT widescreen display, 16,777,216 colors, capacitive or resistive single-touch interface.
• Resolution: 1280 x 800 pixels (WXGA)
• Operating System: Windows Embedded Compact 6.0 (WinCE)
• Configuration Software: WinCC Comfort (TIA Portal) V11 to V18+
• Interfaces:
  • 1 x RJ45 Industrial Ethernet/PROFINET interface with 2-port integrated switch (10/100 Mbit/s)
  • 1 x RJ45 Gigabit Ethernet interface (10/100/1000 Mbit/s)
  • 1 x RS485/422 SUB-D 9-pin interface (PROFIBUS DP/MPI up to 12 Mbit/s)
  • 2 x USB 2.0 Host interfaces, 1 x USB 2.0 Client/Mini-B interface
  • 2 x SD system/data memory card slots
• Lifecycle Status: Currently in Product Phase-Out (PM400/PM410). While spare parts remain available, standard unit prices continue to escalate, and full product obsolescence (discontinuation) is planned.

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Recommended Replacements

When replacing a TP1500 Comfort, engineers must choose between a modern upgrade, an exact physical swap with refurbished/surplus stock, or a specialized alternative depending on software requirements and network topography.

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Compatibility Considerations

Before choosing a raw replacement route, review the critical hardware and network differences between Legacy Comfort panels and the modern Unified series.

Physical Dimensions & Mounting Cutouts

The MTP1500 Unified Comfort is designed specifically to match the physical mounting cutout of the legacy TP1500 Comfort. Both panels use a cutout dimension of 396 mm (Width) x 291 mm (Height) with a mounting depth of approximately 75 mm. This means no sheet-metal modifications, grinding, or custom adapter plates are required when upgrading to the Unified series. However, if moving to an Industrial PC (IPC) or downsizing to a TP1200, customized engineering plates or bezel adapters must be fabricated.

Communication Protocols

One of the most critical hardware differences lies in legacy network support:

• PROFIBUS DP/MPI: The legacy TP1500 Comfort features an onboard SUB-D 9-pin port. The modern MTP1500 Unified Comfort does not have an onboard PROFIBUS port. If your legacy PLC configuration relies on PROFIBUS, you must either:
  1. Upgrade your processor/CPU to a PROFINET-enabled model (e.g., S7-1500 or PN-CPU S7-300).
  2. Implement an active industrial gateway interface (such as an IE/PB Link) to convert Ethernet communication to PROFIBUS DP.
• PROFINET: Both legacy and modern series support PROFINET, but Unified panels offer improved Gigabit processing and segregated network interfaces.

Power & Interfaces

Both systems run on a nominal 24V DC power supply. However, the exact configuration of terminal blocks might differ. Ensure the existing wire gauge matches the input specifications of the new terminal block connector included with the replacement kit.

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Upgrade Benefits

Upgrading to the modern MTP1500 Unified Comfort panel introduces several technical and efficiency advantages over the legacy Windows-CE-based architecture:

• Modern Multitouch Functionality: Capacitive touch technology allows operators to utilize intuitive gestures such as pinch-to-zoom, swiping, and two-handed machinery validation controls. The screen features a rugged chemically-tempered glass cover with high scratch resistance.
• HTML5 Web Client Capability: The Unified Comfort series features an integrated web server. Authorized users can view and control the HMI locally or remotely via any modern smartphone, tablet, or PC web browser with zero client software installation.
• Edge Integration: With Siemens Industrial Edge enablement, the MTP1500 can run localized apps alongside the standard visualization engine. This allows for edge-level data logging, MQTT cloud publication, custom Python scripts, and Predictive Maintenance analytics.
• JavaScript Scripting Engine: Unlike standard Comfort panels which rely on VBScript, the Unified series utilizes standardized JavaScript, creating opportunities for more complex data handling, modern loops, object-oriented array processing, and external API database interfaces.

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Common Migration Challenges

Upgrading to the Unified platform is rarely a "compile and download" operation. Be prepared to address the following software and environment bottlenecks:

VBScript to JavaScript Translation

All legacy Comfort VBScripts are incompatible with modern compilation. When executing a migration in TIA Portal, scripts are deactivated, requiring engineers to rewrite code manually in JavaScript. This includes standard database access routines, file read/write operations to the local storage, and custom diagnostic algorithms.

Graphics and Screen Navigation

Legacy WinCC Comfort objects may not convert perfectly. Differences in screen resolution layout (1280 x 800 vs 1366 x 768) and changes in UI styling (vector vs bitmap) can alter visual appearance. Text wrapping, button alignments, and dynamic graphic scripts must be manually adjusted and validated.

User Administration

Legacy user management concepts rely on user groups and runtime passwords configured in TIA Portal. The Unified platform utilizes Siemens UMC (User Management Component) and Web-based User Management, requiring configurations to align with modern local-user databases or corporate LDAP servers.

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Step-by-Step Replacement Procedure

Follow these technical instructions to safely replace a Siemens TP1500 Comfort HMI panel.

Step 1: Securely Power Down and Lockout Tagout (LOTO)

1. Safely shut down the machinery connected to the system.
2. Turn off the main panel breaker and perform standard Lockout-Tagout protocols.
3. Test terminal connections with a multimeter to ensure the 24V DC input is dead.

Step 2: Implement Backup Strategies

Before unmounting, attempt to extract the current project if the panel is still semi-functional:

• Option A (ProSave): Connect a PG/PC via Ethernet, open Siemens ProSave utility, and execute an "Image Backup." This creates a .psb file which can be flashed directly onto another legacy TP1500 Comfort panel.
• Option B (Memory Card Backup): If a "Service Card" was active inside the panel (system slot), remove the card; this contains the full operational project and operating system image for quick restoration.

Step 3: Remove the Legacy Panel

1. Disconnect the 24V DC power connector terminal.
2. Unplug all communications lines (PROFINET RJ45, PROFIBUS DB9, USB links).
3. Loosen the integrated mounting clamps (screws or spring-loaded clamps) around the perimeter of the inner bezel.
4. Carefully push the HMI forward through the cutout from the rear of the enclosure, ensuring the front gasket does not drop or damage nearby operator buttons.

Step 4: Software Migration (When upgrading to Unified Comfort)

1. Open the original project in TIA Portal V16 to V19.
2. Right-click the TP1500 Comfort device in the project tree and select "Change device."
3. Select the target MTP1500 Unified Comfort panel in the hardware configuration wizard.
4. Address the migration logs:
   • Reorganize screen objects adjusting for the new aspect ratio.
   • Re-write obsolete VBScripts into modern JavaScript.
   • Replace legacy communication connections (such as Direct MPI links) with ethernet connections or alternative gateway protocols.
5. Compile the software to verify there are zero validation and script errors.

Step 5: Mount and Wire the New Panel

1. Inspect the existing cutout. Clear any debris or metal filings from the flange area.
2. Push the new panel (TP1500 or MTP1500) into the physical opening.
3. Tighten the mounting clamps using a torque screwdriver to 0.2 Nm to guarantee the IP65 rating on the front panel face.
4. Plug in the PROFINET and option communication interfaces.
5. Reconnect the 24V DC power terminal.

Step 6: Power Up and Download Configuration

1. Energize the 24V DC supply breaker.
2. Assign the IP address, subnet mask, and device name directly inside the HMI network control panel interface (Windows CE panel control or Unified Control Panel dashboard).
3. Connect your laptop to the system network interface.
4. In TIA Portal, select your configuration folder and click "Download to device". Select the appropriate interface (e.g., PN/IE) to transmit the project file.
5. Test all screen interlocks, communication words, alarms, and SCADA logging functionalities. Ensure the physical connections translate to correct operations on the plant floor.

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Frequently Asked Questions

Can I transfer my legacy TP1500 Comfort project directly onto an MTP1500 Unified without TIA Portal?

No. The TP1500 Comfort utilizes a Windows CE operating system and WinCC Comfort runtime, whereas the MTP1500 uses a custom Linux OS and WinCC Unified runtime. A backup file (.psb) created from a legacy Comfort panel cannot run on a Unified Comfort panel. The project must be compiled and converted within TIA Portal.

What should I do if my legacy panel is dead and I don't have the source TIA Portal project?

If you have no source code back-up but have the exact model replacement from Palm Parts Solution, you can take a system SD card from the legacy unit (provided the system card feature was activated) and insert it into the replacement TP1500 Comfort. Alternatively, you must recover the original TIA Portal project file (.ap11 to .ap19) from your machine builder or previous backups to download to the new replacement.

Can I use the MTP1500 Unified panel with legacy S7-300 and S7-400 PLCs?

Yes. The MTP1500 Unified supports connection drivers for legacy SIMATIC S7-300/400 controllers via Ethernet (PROFINET). If the S7-300 utilizes MPI or PROFIBUS only, you must add an Ethernet CP module (e.g., CP 343-1) or an external Ethernet-to-PROFIBUS gateway.

What is the purpose of the two different SD card slots on the TP1500 Comfort?

The two slots serve distinct duties. The System Slot is reserved for automatic system backups using a specialized Siemens system card. The Data Slot is designed for general user-accessible storage, logging histories, recipe files, and document retrieval.

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Related Products & Families

• Siemens SIMATIC Comfort Panel Lineup: TP700 (7"), TP900 (9"), TP1200 (12"), TP1900 (19"), and TP2200 (22").
• WinCC Unified HMI Software suites: WinCC Unified Comfort ES engineering and Runtime software.
• SIMATIC Memory Cards: 6AV2181-8XP00-0AX0 (2GB Card), 6AV2181-8XP32-0AX0 (SD backup cards).

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Need Help?

Whether you need a legacy drop-in replacement to restore operations immediately or are looking to source high-quality replacement parts for a planned migration, we can help. Palm Parts Solution supplies a wide selection of new, refined, and refurbished Siemens Comfort Panels, complete with comprehensive warranties.

Our experienced technical team can assist you in finding the exact hardware swap or successor model to keep your facility run efficiently. Contact our team today for quick quotes and expert fulfillment.