XML message about the working status of the door station
<WorkStatus version="2.0" xmlns="http://www.isapi.org/ver20/XMLSchema">
<lockStatusList><!--for the lock of the door station, it is always online, so this node may not be returned; for the lock of the external module, this node is required-->
<node>
<lockID>
<!--required, xs: integer, lock ID whose value may be 0 or 1-->
</lockID>
<lockStatus>
<!--required, xs: string, lock status: "online", "offline"-->
</lockStatus>
</node>
</lockStatusList>
</WorkStatus>