Data logging & Alarm Logging in SCADA

Data Logging Modules: Siemens offers dedicated data logging modules such as SIMATIC Memory Cards or SIMATIC S7-1200/S7-1500 CPU's built-in data logging functionalities. These modules allow you to log data directly to external storage media or internal memory.

Historical Data Logging: TIA Portal provides options for historical data logging using integrated databases such as Microsoft SQL Server or MySQL. You can configure the system to store historical process data in these databases for long-term analysis.

Alarm Logging:
Alarm logging is crucial for capturing and analyzing system events, faults, and abnormal conditions. In TIA Portal, you can implement alarm logging using the following methods:

Alarm Blocks: You can create alarm blocks in your PLC program to monitor specific conditions or thresholds. When an alarm condition occurs, these blocks can trigger logging events to record the details of the alarm, such as timestamp, severity, and description.

HMI Alarm Logging: If you're using an HMI (Human Machine Interface) panel in your SCADA system, TIA Portal allows you to configure alarm logging directly within the HMI project. You can define alarm tags and logging settings to capture and display alarms on the HMI screen, as well as log them to external storage.

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Plc stops recording when it is turned off and on again. It stops when there is a power outage and does not work again. How can I run this automatically? What should I do for this? How can I make adjustments in the Db section?