Siemens 6ES7901-3CB30-0XA0 SIMATIC S7-200 PC/PPI Programming Cable

This programming cable provides reliable communication between your PC and S7-200 PLC. The 6ES7901-3CB30-0XA0 enables programming, monitoring, and data exchange with serial connectivity.

Complete Technical Specifications

• Manufacturer & Model: Siemens 6ES7901-3CB30-0XA0
• Product Type: PC/PPI Multi-Master Programming Cable
• Compatible Systems: SIMATIC S7-200 PLC series
• PC Interface: RS-232 serial port (9-pin D-sub male)
• PLC Interface: RS-485 via S7-200 programming port
• Connector Angle: 90-degree connector for space-saving installation
• Baud Rates: 9.6 kbit/s, 19.2 kbit/s, 187.5 kbit/s (selectable via DIP switch)
• Communication Protocols: PPI (10/11 bit), Freeport (ASCII)
• Supported Modes: Programming, monitoring, data transfer, GSM modem support
• Galvanic Isolation: Yes, between RS-232 and RS-485 sides
• Power Supply: Powered directly from the S7-200 CPU (no external power needed)
• Status Indicators: 3 LED indicators (Tx, Rx, PPI) for communication monitoring
• Isolation Voltage: Standard PLC-PC isolation level
• Operating Temperature: 0°C to 60°C typical for industrial use
• Cable Length: Approximately 2.5 meters standard
• Weight: Approximately 300 grams

Compatibility & Applications

• PLC Compatibility: All SIMATIC S7-200 CPU models (CPU 21x, CPU 22x)
• Software Compatibility: STEP 7-Micro/WIN programming software
• Additional Applications: GSM modem connection, Freeport communication to other devices
• Network Support: PPI networks with multiple masters and slaves
• Device Support: PCs, laptops, HMI panels with serial ports

Package Contents & Shipping

• One Siemens PC/PPI Multi-Master programming cable
• Complete with RS-232 and RS-485 connectors
• Protective packaging for connector safety
• International shipping via FedEx, UPS, or DHL available

Warranty & Support

• 12-month warranty against manufacturing defects
• Technical support for connection and configuration
• Compatibility assurance with S7-200 systems

Frequently Asked Questions (FAQ)

• What is the main advantage of the Multi-Master capability? Multi-Master allows multiple programming devices (PCs, HMIs) to communicate on the same PPI network simultaneously, enabling flexible system configuration and monitoring.
• Can I use this cable with modern laptops lacking serial ports? You need a USB-to-serial adapter that provides a genuine RS-232 port. Many USB adapters don't fully support hardware handshaking required by this cable.
• How do I configure the DIP switches for different baud rates? Switch positions: 1=ON for 187.5kbps, 2=ON for 19.2kbps, 3=ON for 9.6kbps. Typically only one switch should be ON at a time for proper operation.
• What does the Freeport protocol support enable? Freeport mode allows your S7-200 to communicate with non-Siemens devices (barcode readers, printers, other PLCs) using custom ASCII protocol communication.
• Why is galvanic isolation important in industrial environments? Isolation prevents ground potential differences between your PC and PLC from causing communication errors or hardware damage, especially in electrically noisy plants.

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