Siemens 6ES7 901-3CB30-0XA0 Serial PC PPI Cable Interface

Siemens 6ES7 901-3CB30-0XA0 Serial PC PPI Cable Interface is a PC/PPI cable that provides an RS-232 serial connection to a SIMATIC S7-200 PLC via the Point-to-Point Interface (PPI) protocol. It is designed as a multi-master cable that links a PC’s RS-232 port to the S7-200 CPU or EM277 communication port to enable programming and data exchange with S7-200 controllers. The order number 6ES7 901-3CB30-0XA0 identifies this specific Serial PC/PPI cable, which Siemens documentation and product listings reference for connecting PCs to S7-200 systems and using with compatible programming environments such as WinCC Flexible and MicroWIN. Official Siemens sources describe it as the RS-232 to PPI adapter used for S7-200 PLCs.