I have created runtime project in zenon 7.60 and i have connected 2 plc with this scada so my problem is my pc got restart for windows Update and when it turned on again I checked my data report which I was recording every minute from both the plc so when pc turned on again then 1st plc data missed at 9pm to 11pm but 2nd plc data missed 10pm to 11pm can anyone tell me how it's possible when a single runtime scada recording 2 plc data at same time then why I'm getting this difference in both report?? 

Help me please