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title: "Site Operating Alarm Parameters"
canonical: "https://docs.rubiconwater.com/space/CFGNC/2002026641/Site%20Operating%20Alarm%20Parameters"
format: markdown
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> Macro (hiddenfragment-macro)
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> not actually 20261 but need to check links in [[RCS-11120] Location of “Site Not Operating” alarm tag/attribute in NeuroFlo (US-TID) - Rubicon Jira](https://rubiconwater.atlassian.net/browse/RCS-11120?focusedCommentId=265846&sourceType=mention) to see if this is up to date
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> Also check [Site Summary - SCADAConnect Desktop (Enterprise) - Confluence](https://rubiconwater.atlassian.net/wiki/spaces/SCDT/pages/1999438299)
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> and [Changing the Site Operating Alarm Wait Time - Alarms (Enterprise) - Confluence](https://rubiconwater.atlassian.net/wiki/spaces/ANC/pages/1990459703)
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# What is a Site Operating Alarm?

A Site Operating Alarm is raised when the current flow at a site doesn't match the ordered flow. The type of alarm raised may be:

- SHOULD BE OPERATING
- SHOULD NOT BE OPERATING
- FLOW ABOVE/BELOW DEMAND

# Site Operating Alarm Parameters

You can use the **Site Operating Alarm - Order Alarm Limit** and **Site Operating Alarm Tolerance** parameters for a network object type to disable site operating alarms or change the default wait period or flow variation before an alarm is triggered.

> ℹ️ **Note**
> ℹ️ 
> ℹ️ Typically these are configured by default in the TCCServ configuration files and need not be modified, but you can override them if necessary for specific sites or site types.

- The **Site Operating Alarm - Order Alarm Limit** parameter value is the time in minutes that a condition must persist before the alarm is triggered. A value of zero will disable the site operating alarms for this type of site.
- The **Site Operating Alarm Tolerance** parameter controls the flow variation that has to be exceeded to trigger the alarm. (This parameter doesn’t apply when flow or demand is zero.)

> ℹ️ **Note**
> ℹ️ 
> ℹ️ You must restart the TCC Service before any changes take effect.

# Why change the wait time for a site type?

The **Site Operating Alarm - Order Alarm Limit** parameter override is useful for metering sites which cannot be polled from the host. These sites are typically configured to transmit data to the host at specified intervals. If this interval is longer than the default wait time, then false site operating alarms might be raised for a short period of time until the remote site reports its current flow back into the host.

## Configuring the Flow Tolerance for a Site

You can configure the flow tolerance at outlet level by setting the value of the **Site Operating Alarm - Flow Above/Below Tolerance** attribute for the outlet. The value must be greater than or equal to zero and is expressed as a factor. For example, a value of 0.7 means that the FLOW ABOVE/BELOW alarm for the site will not be raised unless the measured flow and ordered flow are out by more than 70%.

The higher the setting, the fewer flow above/below alarms will be raised for the site. The tolerance is uncapped and changes to this object attribute value are effective without requiring a restart to the TCC Service.

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