hi, I want to synchronise my S7-400H controller (S7-412-5H) time with connected operator station time.The problem is PLC real time clock used to get running behind the actual time after some months of continuous operation. So it should be synchronised after certain time interval (Lets say after every day or week). So can anyone please help me out to get the actual method to synchronise the time. I have tried using NTP server method where operator station has been assigned as NTP server but it didnt worked..

Thank You..

vinayakparab81292

hi, I want to synchronise my S7-400H controller (S7-412-5H) time with connected operator station time.The problem is PLC real time clock used to get running behind the actual time after some months of continuous operation. So it should be synchronised after certain time interval (Lets say after every day or week). So can anyone please help me out to get the actual method to synchronise the time. I have tried using NTP server method where operator station has been assigned as NTP server but it didnt worked..

Thank You..

 Hello,

Please check this link:

Time synchronization between an HMI and a SIMATIC PLC

Hope this helps