optoelectronic isolated USB Siemens S7-200PLC multi-master station PPI programming cable, directly use the STEP7 MicroWIN software to communicate, no need to install driver, support PPI, multi-master station PPI and advanced PPI, support 187. 5Kbps high speed communication, just the same as 6ES7 901-3DB30-0XA0, 3 meters, with communication indicator.