6ES7901-3CB30-0XA0 PC/PPI Cable – Siemens S7-200 Multi-Master

Product Overview – 6ES7901-3CB30-0XA0

• Type: PC/PPI Multi-Master Cable
• Brand: Siemens
• Model: 6ES7901-3CB30-0XA0
• Series: SIMATIC S7-200
• Function: Connects S7-200 to PC serial port
• Speed: Up to 187.5 kbit/s
• Isolation: Galvanic isolated
• Weight: 300 g

Technical Data – Tree Structure

• Interfaces
  • PC side: RS-232 (serial)
  • PLC side: RS-485 (PPI)
  • Connector: 90-degree connector
  • Speed: 9.6 / 19.3 / 187.5 kbit/s (DIP switch selectable)
• Protocols
  • PPI (10/11 bit)
  • ASCII (Freeport)
  • Supports GSM modems
• Indicators
  • Tx (green): RS-232 transmit
  • Rx (green): RS-232 receive
  • PPI (green): RS-485 transmit
• Electrical
  • Power: From CPU (no external supply)
  • Isolation: Galvanic isolated
  • Potential separation: Yes

Expert Review

6ES7901-3CB30-0XA0 provides reliable S7-200 connectivity to PCs. The multi-master support handles complex networks. It works with Freeport and GSM modems. A must-have for S7-200 programming and diagnostics.

Manager’s Insight

This cable simplifies S7-200 communication with its 90-degree connector. Use it for programming, monitoring, or modem connections. The DIP switches allow easy speed changes. It reduces troubleshooting time in the field.

Compatible Devices & Applications

• PLCs: SIMATIC S7-200 series
• Applications: Programming, diagnostics, remote monitoring
• Modems: GSM modems for remote access
• Interfaces: PC serial port (RS-232)

Comparison – Similar Models

• 6ES7901-3CB30-0XA0 – Multi-master, isolated
• 6ES7901-3DB30-0XA0 – USB version
• 6ES7901-3CB30-0XB0 – Non-isolated version

FAQ – Professional Questions

• Q: What speed does this cable support?
• A: Up to 187.5 kbit/s (selectable).
• Q: Is it isolated?
• A: Yes, galvanic isolated.
• Q: What protocols does it support?
• A: PPI and Freeport (ASCII).
• Q: Can I use it with a modem?
• A: Yes, supports GSM modems.
• Q: Does it need external power?
• A: No, powered from the CPU.

Experience-based FAQ & Selection Guide

• Q: Why can’t I connect to my S7-200?
• A: Check the DIP switch speed and COM port settings.
• Q: Can I use this with a USB adapter?
• A: Yes, use a RS-232 to USB converter.
• Q: What do the LEDs indicate?
• A: Tx/Rx for RS-232, PPI for RS-485 activity.
• Q: Is the 90-degree connector useful?
• A: Yes, it fits tight spaces on the PLC.
• Q: How long is the cable?
• A: Cable length is approximately 2.5 meters.
• Q: Can I use this with STEP 7 Micro/WIN?
• A: Yes, it is the recommended cable.

Selection Guide – What to Consider

• PLC model: S7-200 series only.
• PC port: Requires RS-232 serial port.
• Isolation: Choose isolated version for noise protection.
• Speed: Set DIP switch to match your PLC.
• Remote access: Supports GSM modems for remote connection.

Warranty, Shipping & Support

• Warranty: 12 months against manufacturing defects.
• Dispatch: 12–24 hours after order confirmation.
• Couriers: FedEx, UPS, DHL (express delivery).

Contact Information

For inquiries: sales@powergearx.com
WhatsApp: +86 18030005825

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