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AVEVA™ Historian

System monitoring tags

  • Last UpdatedFeb 27, 2025
  • 1 minute read

Unless otherwise noted, for the following discrete tags, 0 = Bad; 1 = Good.

Tag

Description

SysClassicManual Storage

Status of the data import service (aahManStSvc.exe).

SysClassicStorage

Status of the classic data redirector service (aahStoreSvc.exe).

SysClientAccessPoint

Status of the Client Access Point service (aahClientAccessPoint.exe).

SysConfiguration

Status of the configuration service (aahCfgSvc.exe). This parameter is set to 1 as long as a dynamic configuration is required or in progress.

SysDataAcqN*

Status of the IDAS service (aahIDASSvc.exe).

SysEventStorage

Status of the event storage service (aahEventStorage.exe).

SysEventSystem

Status of the classic event system service (aahEventSvc.exe).

SysIndexing

Status of the indexing service (aahIndexSvc.exe).

SysInSQLIOS

Status of the AVEVA Historian I/O Server (aahIOSvrSvc.exe).

SysMetadataServer

Status of the metadata server process (aahMetadataServer.exe)

SysOLEDB

Status of the OLE DB provider (loaded by SQL Server).

SysPulse

Discrete "pulse" tag that changes every minute.

SysReplication

Status of Replication service (aahReplSvc.exe).

SysRetrieval

Status of the retrieval service (aahRetSvc.exe).

SysStatusSFDataPending

Discrete tag indicating if one or more HCAL clients have store-and-forward data that needs to be sent to the Historian. NULL = Unknown; 0 = No store-and-forward data; 1 =At least one HCAL client has data.

SysStorage

Status of the storage process (aahStorage.exe).

SysSystemDriver

Status of the system driver (aahDrvSvc.exe).

SysStatusMode

Analog tag indicating the operational state of the Historian. If the value is NULL, the Historian is stopped. 0 = Read-only mode. 1 = Read/write mode.

*This status tag will exist for each defined IDAS. The identifying number (N) appended to the end of the tag is the IODriverKey from the IODriver table.

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