SIEMENS PLC set up system time
There are two ways to set PLC time and real-time time synchronization.
1. In SIMATIC Manager, open the project in turn to the CPU (such as CPU 315-2DP), then right-click the CPU to select “PLC/Set Time of Day”, set the corresponding time in the interface, directly modify the CPU time and date;
2. You can also open your project in SIMATIC Manager and select the menu PLC/Diagnostic/Setting/Setting Time of Day (Diagnosis/Setting/Setting Date Time of Day). In the open interface, you can change the date of the CPU with the same settings as above.
PLC ONE 