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Verify that this remote connection was scheduled or authorized by your facility's maintenance or IT department.

Note the connection time and destination identifier (%1 parameter) in your maintenance log for security audit purposes.

Confirm with the remote service provider what diagnostic or service activities will be performed during this session.

Monitor machine operation during remote session and acknowledge alarm to clear it from the display. No further action required unless connection was unauthorized.

If this connection was NOT authorized, immediately disconnect network cable and contact your IT security department

Check if your facility has an active Siemens Remote Service contract or MindSphere connectivity enabled.

Review the destination address (%1) and verify it matches the known Siemens service gateway or monitoring server address.

Acknowledge the alarm. The connection will typically remain active for the monitoring session duration.

Document the connection event in your system log. No corrective action needed for routine monitoring connections.

Immediately check with your maintenance supervisor and IT department to verify if any remote service was scheduled.

Do NOT ignore unexpected remote connections as they pose serious security risks

If connection is unauthorized, physically disconnect the control network cable or disable the network interface through HMI Settings > Commissioning > Network.

Disconnecting network may interrupt other networked functions like DNC or distributed I/O

Document the destination address shown in %1 parameter and contact Siemens support and your IT security team immediately.

Review firewall settings, VPN configurations, and change all remote access passwords. Conduct security audit of PLC and HMI access logs.