Product Introduction
Part of the SIMATIC S7-200 family, the Siemens 6ES7901-3DB30-0XA0 USB/PPI multi-master cable is designed for programming and communication between the S7-200 PLC and a USB-equipped PC. This cable replaces older RS-232 interfaces, providing a modern and reliable connection solution for upgrading existing systems.
Technical Specifications
The Siemens 6ES7901-3DB30-0XA0 offers key technical parameters precisely engineered for S7-200 communication:
| Parameter |
Value |
| Product type designation |
USB/PPI multi-master |
| Power supply |
From USB interface |
| Transmission rate, max. |
187.5 kbit/s (9.6 / 19.2 / 187.5 kbit/s); setting not necessary |
| PPI protocol |
Yes; 10/11 bit |
| LED status display |
Tx (green): USB send; Rx (green): USB receive; PPI (green): RS-485 send |
| Potential separation |
Yes |
| Weight, approx. |
300 g |
Industry Applications
The Siemens 6ES7901-3DB30-0XA0 is ideal for upgrading S7-200 programming interfaces in manufacturing cells, packaging lines, and batch control systems. Field technicians can quickly connect to PLCs for diagnostics and parameter changes using modern laptops without legacy serial ports. The multi-master capability supports multiple masters on the same PPI network.
Installation & Setup Guidance
Installation of the Siemens 6ES7901-3DB30-0XA0 is straightforward: connect the USB end to a PC and the RS-485 PPI connector to the S7-200 CPU. No external power supply is required as the cable draws power directly from the USB port. In Siemens STEP 7-Micro/WIN software, select the appropriate PPI profile and set the transmission rate (auto-detected). Note that Freeport mode is not supported, so standard PPI communication is used.
Selection Guide & Purchasing Advice
Before purchasing the Siemens 6ES7901-3DB30-0XA0, verify your S7-200 CPU has a compatible PPI port (usually 9-pin D-sub). This cable works with all S7-200 CPUs. For reliable sourcing, PLC Source PRO (available at ubest101) offers genuine Siemens parts with fast shipping. Confirm your specific application requires multi-master support for network configurations.