PDF] WinCC, profibus and profinet systems for teaching purposes | Semantic Scholar
Siemens Simatic Dp, Rs485 Repeater For Connection Of Profibus/mpi Bus Systems With Max. 31 N 6es7972-0aa02-0xa0,6es79720aa020xa0 - Instrument Parts & Accessories - AliExpress
SIEMENS 6ES7972-0AA01-0XA0 SIMATIC DP, RS485 REPEATER FOR THE CONNECTION OF PROFIBUS/MPI BUS SYSTEMS WITH MAX. 31 NODES; MAX. 12 MBIT/S, DEGREE OF PRO- TECTION IP20 from China manufacturer - Shenzhen Juson Automation