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Access Panels Offline When Communication Server Runs as Service

  • Updated

This article explains why access panels may report as offline in Alarm Monitoring when the LS Communication Server is running as a Windows service, and how to resolve the issue by ensuring proper permissions.

Description

  • LS Communication Server can run as either a Windows service or an application from Start > Programs > OnGuard.
  • When the LS CommunicationServer is running as a service, access panels incorrectly report as offline in Alarm Monitoring (red X in System Status Tree).
  • When the LS CommunicationServer is running as an application (service stopped), access panels report correctly as online.

  • Windows Event Viewer may show errors like:

    "Internal logic error.: SCPDriver received NAK Reply for panel 18 Reason[4 - Command Content Error] Data[0] Command[ 5B 00 17 00 03 0A 00 93 8E 59 42 02 02 00 05 00 FF 07 00 06 ]"

Resolution

To resolve this issue, ensure that the LS Communication Server service has local administrative rights on the server:

  • Work with local IT to obtain local admin rights on the PC if needed.
  • The Local System Account usually has sufficient permissions.
  • Alternatively, configure the service to run under a specific user account with local administrative rights.

Applies To

BASIS and OnGuard – All versions

Additional info

The panels may appear online when the Communication Server runs as an application because the logged-in user is a local or domain administrator, providing the necessary permissions for proper operation.
In all reported cases, the issue was accompanied by a NAK error in the Event Viewer. The byte sequence in the error string is typically similar to:
5B 00 17 00 83 0A 00 93 8E 59 42 02 02 00 05 00 FF 07 00 06
(Note: the exact string may vary between instances.)

 

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