1) WR_SYS_T (write system time) writes the DTL value of the input IN to the PLC real time clock.2) RD_SYS_T (read system time) saves the current system time of the read PLC in the output OUT with the data type DTL.3) RD_LOC_T (read local time) saves the read PC local date and time in the … Continue reading How to write system time to SIEMENS 1200PLC

SIEMENS PLC set up system timeThere 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 … Continue reading How does SIEMENS PLC set up system time?