The following operations are executed when the start is requested.
The LOG file settings are checked by the PLC.
Once data recording becomes executable, the data recording active system variables (sys_bIsLog0DataRecordingActive–sys_bIsLog15DataRecordingActive) turn to TRUE. When the data recording active system variable is TRUE and when the sampling condition is met, data recording starts.
All other flags for LOGn are cleared during the start request operation.
Once writing data into an SD card becomes enabled after the data recording active system variables (sys_bIsLog0DataRecordingActive–sys_bIsLog15DataRecordingActive) have turned to TRUE, the SD card logging active system variables (sys_bIsLog0LoggingToSDCardActive–sys_bIsLog15LoggingToSDCardActive) turn to TRUE.
When there is no SD card inserted or when the SD card cannot be read or written to, or when the card cover is open, an operation error occurs.