Connecting Profibus to S7-300 Siemens


Thread Starter


dear all..

recently 1 of the control system (PC using Siemens wincc flexible 2007) had been crash. so we had change the pc driver and install with new wincc flexible 2008sp2. some how now i cant get online with S7-300 cpu

i had couple of time reconfirm setting on wincc ES HMI(PC)-DP-CPU. and also had check connection cable at profibus. A1 red B1 green at PC and A1 red B1 at cpu. and setting was at ON position.

can some1 advise me if i had make mistake. and anything i had didn't check.
i m new to Siemens PLC.