Siemens 6ES7972-0CB20-0XA0 PC Adapter USB for SIMATIC S7

The Siemens 6ES7972-0CB20-0XA0 provides reliable connectivity between your PC and SIMATIC S7 systems. This compact USB adapter enables efficient programming and diagnostics for automation projects. It supports high-speed data transfer across multiple Siemens controller families.

Communication & Interface Specifications

• Data Transfer Speed: RS485 interface supports up to 1.5 Mbps
• USB Performance: Full-speed USB 2.0 with 12 Mbps capability
• Compatibility: Works with S7, M7, and C7 controller series
• Protocol Support: MPI, PPI, and PROFIBUS DP protocols
• Cable Length: Supports standard PROFIBUS cable up to 100 meters
• Connection Type: 9-pin D-sub connector for field connection
• Driver Support: Compatible with Windows 7 through Windows 11

Electrical Characteristics & Power

• Power Supply: 24V DC via MPI interface (18-30V range)
• Current Consumption: 50mA typical, 100mA maximum
• Inrush Current: 700mA maximum for 8 microseconds
• Power Consumption: 2.5W maximum active power input
• Isolation Voltage: 500V isolation between USB and MPI sides
• Safety Class: Safety Class III according to IEC 60950
• Protection Class: IP20 for basic environmental protection

Environmental Durability & Reliability

• Operating Temperature: 0°C to +60°C reliable performance range
• Storage Temperature: -20°C to +60°C safe storage conditions
• Operating Humidity: 5% to 80% at 25°C without condensation
• Vibration Resistance: 10-500Hz with 9.8 m/s² acceleration
• Shock Resistance: 150 m/s² for 11ms duration during operation
• EMC Immunity: 2kV burst protection on signal lines
• ESD Protection: 6kV contact discharge and 8kV air discharge

Physical Design & Dimensions

• Compact Size: 105mm × 58mm × 26mm (L×W×H)
• Lightweight: Only 250 grams for easy portability
• Housing Material: ABS plastic with UL94 V-0 rating
• LED Indicators: Power and communication status lights
• Color Scheme: Siemens standard gray with blue accents
• Cable Management: Integrated strain relief for USB cable
• Mounting Options: Desktop use with non-slip rubber feet

Installation & Setup Guide

• Driver Installation: Automatic detection with included software
• Connection Sequence: Connect USB first, then MPI cable
• Power Requirements: MPI port provides necessary 24V power
• Software Compatibility: TIA Portal and STEP 7 professional
• Diagnostic Capability: Online monitoring and program debugging
• Firmware Updates: Field-upgradeable firmware via USB
• Troubleshooting: LED indicators show connection status

Packaging & Delivery Information

• One complete 6ES7972-0CB20-0XA0 PC adapter unit
• USB cable and installation documentation included
• Global express shipping via FedEx, UPS, and DHL
• Protective packaging ensuring factory-fresh condition
• Quick order processing with 24-hour dispatch available

Frequently Asked Questions

• What software do I need for this adapter?
• You need STEP 7 or TIA Portal software installed on your computer for full functionality.
• Can I use this adapter with older S7-300 systems?
• Yes, the adapter maintains full compatibility with S7-300, S7-400, and newer S7-1200/1500 systems.
• How do I troubleshoot connection issues?
• Check both LED indicators and verify the MPI address matches your hardware configuration.
• What is the maximum cable length supported?
• The adapter works with standard PROFIBUS cables up to 100 meters without signal repeaters.
• Does this adapter require external power?
• No, the adapter draws power directly from the MPI port of your Siemens controller.

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