6AV6642-0BA01-1AX1 Siemens SIMATIC TP 177B PN/DP Touch Panel

6AV6642-0BA01-1AX1 Product Overview

The 6AV6642-0BA01-1AX1 is the Siemens SIMATIC TP 177B PN/DP — a discontinued but widely available spare parts market model — operator interface terminal (OIT / HMI touch panel). This 5.7-inch color touch panel is a complete self-contained human-machine interface device, not merely a replacement touch glass. The TP 177B features an analog resistive touch screen, 5.7-inch STN LCD display with 256-color capability, and full communication support including MPI/PROFIBUS DP, PPI, and PROFINET (PN) via an integrated 10/100 Mbps Ethernet port. Configured using WinCC flexible 2005 or higher, this HMI panel is a popular replacement part for older Siemens S7-based automation systems in manufacturing plants worldwide.

Siemens SIMATIC TP 177B Series: Discontinued but Still Running

The SIMATIC TP 177B (6AV6642-0BA01-1AX1) was discontinued by Siemens as of January 10, 2021. However, thousands of these panels remain installed in factories and production facilities worldwide, and replacement units continue to be needed for maintenance and repair. The TP 177B was part of Siemens' value-line HMI offering — positioned below the more advanced TP 277 and KP 277 series — but built to the same rigorous industrial quality standards that Siemens is known for. Despite its discontinuation, the TP 177B remains a common spare parts item in industrial maintenance departments, particularly in regions with older automation infrastructure.

Key characteristics of the TP 177B series:

• Complete HMI terminal: Not just a touch screen — this is a self-contained operator interface with display, touch, CPU, memory, and multiple communication ports integrated into a single panel

• Proven Siemens reliability: Built for 24/7 industrial operation with wide operating temperature range (0°C to +50°C) and rigorous EMC testing

• Multi-protocol support: Native MPI, PROFIBUS DP, PPI, and PROFINET support makes the TP 177B compatible with virtually all S7 PLC families (S7-200, S7-300, S7-400, and S7-1200/1500 via legacy modes)

• Field-retrofittable: The TP 177B's standard cutout dimensions (198×142mm) match many other 5.7-inch Siemens HMI panels, simplifying field retrofits

Technical Specifications

Communication Interfaces Explained

• MPI (Multi-Point Interface): Siemens' original PLC-HMI communication protocol — the TP 177B can act as an MPI master or slave, connecting to S7-300/400 PLCs via the standard MPI port

• PROFIBUS DP: The primary fieldbus protocol for connecting the HMI to distributed I/O and PLCs — the TP 177B supports DP-V0 and DP-V1 message protocols, making it compatible with most S7 PROFIBUS networks

• PPI: Point-to-Point Interface — used primarily for S7-200 PLC communication; the TP 177B can communicate with S7-200 systems via this protocol

• PROFINET (PN): The TP 177B PN variant includes an integrated 10/100 Mbps Ethernet port supporting PROFINET protocol — enabling connection to modern S7-1200/S7-1500 PLCs and industrial Ethernet networks

• USB port: For connecting a mouse, keyboard, or barcode scanner for operator input and diagnostics

Typical Applications

• Siemens S7 PLC HMIs: Operator interface for S7-200, S7-300, and S7-400 PLC-based automation systems in manufacturing — the TP 177B PN/DP version supports all major S7 communication protocols for maximum flexibility

• Packaging Machinery HMI: Touch panel for PLC-controlled packaging equipment — operators use the resistive touch screen to enter parameters, acknowledge alarms, and monitor production status

• Material Handling Systems: Conveyor control and sorting system operator interface — the TP 177B's alarm logging (up to 2,000 messages) helps maintenance technicians diagnose faults quickly

• Plastic Injection Molding Machines: Controller interface for injection molding machine PLCs — the wide operating temperature range (up to +50°C) makes it suitable for machine-side mounting

• Industrial Oven Controls: Temperature and process control monitoring interface for heat treatment furnaces and industrial ovens

Important Note on Discontinuation

The 6AV6642-0BA01-1AX1 (TP 177B PN/DP) was discontinued by Siemens on January 10, 2021. While new surplus and refurbished units may still be available through the spare parts market, buyers should be aware of the following:

• No direct replacement: The TP 177B was not directly replaced by a single Siemens model — the TP277 and later the HMI KTP series filled similar application requirements but with different dimensions and protocol sets

• Retrofit consideration: When modernizing an older system that uses the TP 177B, consider that the replacement HMI may require PLC program updates to accommodate the new panel's configuration software

• WinCC flexible 2005: Configuration requires WinCC flexible 2005 (or higher) — this software is also discontinued but may still be available through Siemens' legacy software support channels

Quality Assurance and Support

• ✓ 100% genuine Siemens 6AV6642-0BA01-1AX1 SIMATIC TP 177B PN/DP touch panel

• ✓ Professional Technical Support: 15+ years engineering team experienced in Siemens HMI repair and integration

• ✓ Quality Inspection: All HMI panels are function-tested before shipment

• ✓ Fast Shipping: Ships within 1-3 business days from Hong Kong warehouse

• ✓ 30-Day Returns: Hassle-free return policy for unused items

• ✓ 1-Year Warranty: Manufacturer defect warranty included for peace of mind

Packing and Shipping

All HMI panels are carefully packaged with anti-static materials and protective cushioning to prevent damage during international transit. Each unit is individually wrapped and labeled with model number for easy identification. Shipping available worldwide via DHL, FedEx, UPS, and TNT with full tracking and insurance.