How can you synchronize CPU clocks with each other?

Instructions:If multiple CPUs are linked with each other in a subnetwork, you parameterize the clock of one CPU as the master clock. When parameterizing the CPU you also specify the synchronization interval after which all the clocks in the subnetwork are automatically synchronized with the master clock. You call system function SFC48 "SNC_RTCB" in the CPU with the master CPU. The call