Technical data

Memory usage and application examples
3.2 Memory usage for data logging
Structure and Use of the CPU Memory
30 Function Manual, 01/2013, A5E03461664-01
Network 4
The state of the input EN is based on the point in time at which the execution of
"DataLogCreate" was completed. One execution of "DataLogCreate" extends over multiple
cycles, and must be completed before a write operation is executed. The rising edge at input
REQ is the event, that triggers an activated write operation.
Figure 3-8 Network 4
Network 5
Close the Data Log once the last data record has been written. After execution of the
"DataLogWrite" instruction, which writes the last data record, the STATUS output is set to
"1".
Figure 3-9 Network 5