Product Overview

The Siemens 6AV6640-0CA01-0AX0​ is a classic SIMATIC touch panel belonging to Siemens’ renowned micro HMI family, purpose-engineered as a cost-optimized operator interface for SIMATIC S7-200 micro PLC systems. As a member of the TP170micro / TP177 Micro product lineage, the Siemens 6AV6640-0CA01-0AX0​ features a 5.7-inch blue-mode STN display with 320×240 pixel resolution and 4-level grayscale rendering, delivering clear, high-contrast textual and graphical process visualization that has proven its worth across decades of industrial deployment. Designed and manufactured by Siemens AG, the Siemens 6AV6640-0CA01-0AX0​ embodies the rugged simplicity and maintenance-free reliability that define Siemens’ Classic Panel philosophy—a resistive analog touchscreen, a 256 KB user memory, and a software clock with no battery backup to fail.The Siemens 6AV6640-0CA01-0AX0​ connects to SIMATIC S7-200 controllers via an integrated RS485 interface supporting PPI and MPI network protocols at up to 187.5 kbit/s, enabling seamless data exchange for monitoring, parameter adjustment, alarm acknowledgment, and recipe management. Powered by a 24 V DC supply drawing just 0.24 A, the Siemens 6AV6640-0CA01-0AX0​ operates without internal fans, generating minimal heat and ensuring long-term reliability. The LED backlight achieves an MTBF of approximately 50,000 hours at 25°C, translating into years of continuous, flicker-free operation in typical factory conditions.While Siemens has officially transitioned the Siemens 6AV6640-0CA01-0AX0​ into the P.M490 spare parts phase (effective October 1, 2016) as part of the company’s Classic HMI discontinuation program, the device remains one of the most actively sought-after spare panels in the global automation aftermarket. This is because countless S7-200-based machines from the 2000s and early 2010s continue to rely on the Siemens 6AV6640-0CA01-0AX0​ for daily operator interaction. For plant managers and OEMs committed to maximizing the return on existing machinery without undertaking full digital modernization, the Siemens 6AV6640-0CA01-0AX0​ represents the definitive 1:1 replacement solution—preserving original WinCC flexible projects, maintaining established operator workflows, and eliminating the substantial engineering cost of HMI migration. Configurable exclusively with WinCC flexible 2004 Micro SP1 or higher (including Hardware Support Packages for Compact/Standard/Advanced editions), the Siemens 6AV6640-0CA01-0AX0​ continues to deliver dependable service in the most demanding industrial environments worldwide.

Technical Specifications