firstname.lastname@example.org Posted December 30, 2019 Report Share Posted December 30, 2019 Hello, using Unistream PLC (tested with or without HMI with 1.28.34 - the problem is the same) we note a strange behavior regarding Alarm History in Unistream and SD Card. During normal operation all works well (events history is correctly display using the related HMI object and data are stored in CSV file into SD Card). The problem is that It seems that after reboot, the Alarm History list is empty, so all the history is lost. We have seen that the PLC creates a CSV with the alarm history list, but after reboot also that CSV is empty (the file is there but inside there are no records). In the SD AlarmLogs subfolder, there are other CSV files with a prior timestamps (probably with lost events but these data can not be seen with any HMI object). Is there a way to make the Alarm History retained? If it erases itself after reboot, it is not useful… We don’t think it is useful having an alarm history that does not keep the list on the HMI after reboot... The customer needs to see the alarm history also after the reboot using the integrated HMI! Thanks and Best Regards Roberto Zeni Quote Link to comment Share on other sites More sharing options...
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