Hello AKCP Valued Dealer,

These are excellent questions and we will be happy to answer all of them below, and will include additional details that should also help with your overall understanding of how this feature works.

We also highly recommend checking this previous entry to our Online Technical Forum on graphing problems on the SP+ units here;

https://forum.akcp.com/questions/question/spx-sensor-graph-not-working-shows-blank

1. On your first question, yes, the historical graphing data is stored in non-volatile memory, so it will remain intact after device reboots or during power outages.
2. If the date and time are out of sync, the graphs won’t display correctly. Once both the unit’s and the PC’s time are synchronized, the graphs should show as expected.
3. That is an excellent question, and we are happy to clarify as follows;

To confirm, you are correct. Even if the event log contains 2 months of sensor triggered data (status change events), the graphing feature will not sync with or rebuild its historical data from that log.

The reason for this is that the Event Log and the Historical Graphing data are two separate systems within the device, each designed for a different purpose:

• Historical Graphing Data: This system is designed to create continuous graphs. It records a sensor’s information (reading and status) at a regular, fixed interval (3 minutes by default). This is what creates the smooth line on the graph, but it is also the data that can be cleared by the actions mentioned in my previous email.
• Event Log Data: This system is designed to be an audit trail of specific events. It only records an entry when a sensor’s status changes (e.g., goes from “Normal” to “High Critical” or returns to “Normal”). It does not record data continuously.

So, while the event log confirms the sensors were online and triggering alarms, it unfortunately does not contain the thousands of continuous data points needed to redraw the historical graph once it has been cleared.

For your future reference, these are the common actions that can clear historical graphing data for all of the sensors connected to the SP+ units:

1. Changing the data collection period. Restoring to the original settings via the web UI. Restoring from a backup. Performing a factory reset via the physical reset button.
2. For individual sensors: Disabling and then re-enabling graphing in the sensor’s advanced settings. Plugging in a different sensor type to the same port. Making significant changes to the system date and time.
3. To enhance the device’s stability and prevent this from happening again, we strongly recommend the following best practices:
4. Use the official 5.5V AKCP Power Supply Unit (PSU) connected to a UPS for a stable power supply to the device.
5. Set the correct date and time using NTP in Continuous mode with valid NTP servers. You can verify the time on the device and the PC is correct at https://time.is/.
6. Once you have finalized the sensor port configurations, we recommend turning off the Autosense feature to prevent unintended sensor type changes.
7. Enable graphing on the necessary sensors and observe for an hour to confirm it correctly collects and displays recent historical data.
8. Download a fresh Backup and Support File from the unit to save a known-good configuration.

If you encounter any graphing issues again, please download a new support file immediately while the issue is present and send it to us for analysis.

We do hope this helps clarify these additional questions on the SP+ units graphing features.

Best regards,

AKCP Support Team