The “Writing…” status in your polling report indicates that the data for that time period has not been completed for that time period. You may see this status on your MIU device if the device has had a date/time update recently or if the MIU device was turned off during that time.
If you are seeing this status daily, then there may be a problem with power to your MIU device. It is recommended that your MIU device remains powered on at all times even while your facility is closed. This allows for longer device lifetime and ensures data consistency.