title: "Monitoring" url: doc/development/forte_monitoring.html page_css_file: /4diac/css/4diac_doc.css sidebar: - sb-doc ---

DTD will be added, after finishing all the implementation work and the interface for all commands is stable. Currently the following monitoring commands are supported:

AddWatch: where {0} is an id, {1} will be replaced with FB-Instance-Name.Portname and {2} is '*'

<Request ID="\{0}" Action="CREATE">
    <Watch Source="\{1}" Destination="\{2}" />
</Request>

DeleteWatch: where {0} is an id, {1} will be replaced with `FB-Instance-Name.Portname and {2} is '*'

<Request ID="\{0}" Action="DELETE">
    <Watch Source="\{1}" Destination="\{2}" />
</Request>

ReadWatches: queries the current values of the watched elements
```
<Request ID="\{0}" Action="READ">
    <Watches/>
</Request>
```

Read_Watches Response Message:

<Resource name="ResName">
    <FB name="fbName">
        <Port name=\"portname">
            <--if variable port -->
            <Data value="value" forced="true | false"/>
            <-- if event port -->
            <Data value="value" />
        </Port>
    </FB>
</Resource>

ForceValue: where {0} is an id, {1} is the value, {2} will be replaced with FB-Instance-Name.Portname and {3} is either true or false in order to remove the force
```
<Request ID="\{0}" Action="WRITE">
    <Connection Source="\{1}" Destination="\{2}" force="\{3}" />
</Request>
```

TriggerEvent: where {0} is an id, {1} will be '$e' and {2} is FB-Instance-Name.EventName

<Request ID="\{0}" Action="WRITE">
    <Connection Source="\{1}" Destination="\{2}" />
</Request>

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