Audit log	Description
Event ID	The ID of the audit log event. The maximum value for this ID is 0x7FFFFFFF. LOGO! BM can only store up to 64 audit log records. When the number of records exceeds this limit, the oldest records are overwritten by newly generated audit logs. The internal audit log storage is split into security and non-security regions; overwrites occur independently within each region (i.e., each region only overwrites records in its own area). Note: When an overwrite event occurs, an audit log named as "Audit log first-time overwritten" will be generated and recorded. This audit log will never be overwritten by any newly generated audit logs.
Date and Time	The BM date and time when the event occurs.
Event Type	The brief description of the event, for example, circuit diagram stopped/started, SD card inserted/pulled out, device IP changed and so on.
Event Class	LOGO! BM records the following types of audit event: Access control Request error System Backup and recovery Configuration change Auditable log
Severity	The severity level of event impacting the system: Critical Error Warning Info Debug
Event Origin	The origin of the audit event: Bootloader SD card Certificate management module Device info module Diagram management module Communication management module Time management module EM module Auditable log management module Driver Power User management module
Extra Info	Additional information of the event.

Exporting audit logs

Export the online audit logs to your PC through LOGO! settings -> Online settings -> Audit Log. To access the Online settings, LOGO!Soft Comfort requires that you confirm the connection interface for each communication attempt. See "Tools -> Transfer" for complete information.

All audit logs from the connected BM are displayed in the table. Click ① to convert the BM's timestamp of audit log events to the PC local date and time.

Click ② to filter the audit logs by the event type.

Click to retrieve all audit logs from the BM. Note: An additional audit log entry will be generated for this retrieval action.

Click ③ to export the audit logs as a CSV file and save it to your PC.

Click ④ to export the audit logs as a JSON file and save it to your PC.

When you select an audit log in the table, its detailed information of the audit log will be displayed in ⑤.

Importing audit logs

Select the command Tools -> Audit Logs to import offline audit logs into LSC.

Click ③ to import an audit log file from your PC to LSC, then you can view the imported audit logs in the table.

Click ① to convert the BM's timestamp of the audit log events to the PC local date and time.

Click ② to filter the audit logs by the event type.

When you select an audit log in the table, its detailed information will be displayed in ④.