Siemens SIMATIC S7 System Manual page 306

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101BExtended instructions

8.7 Data logging

Example Data log program

Example data log names, header text, and the MyData structure are created in a data block.

The three MyData variables temporarily store new sample values. The process sample

values at these DB locations are transferred to a data log file by executing the DataLogWrite

instruction.

Network 1 REQ rising edge starts the data log creation process.

Network 2 Capture the DONE output from DataLogCreate because it is only valid for one

S7-1200 Programmable controller

System Manual, 11/2011, A5E02486680-05

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