Echelon LonBridg Server - Manual (Page 33)

LonBridge Server User’s Guide 27
posProperty--;
}
}
LonBridge Commands for Input Messages
The LonBridge Server sends messages to a LonBridge application for either of
the following reasons:
• In response to specific LonBridge command
• To notify the LonBridge application of events, such as device discovery or
a property update
An application cannot send input messages.
The LonBridge XML for input messages includes the following XML elements:
The message allows the LonBridge application to specify error
conditions, for example, for a GUI.
Table 4 lists the attributes for the message.
Table 4. Attributes for the Message
Attribute Description Required?
code Specifies the error code. Optional
description Specifies the error description. Optional
The message announces the current value of the attributes for a device.
This message is used only for devices with a non-empty domain.
The attributes for the message vary depending on the device and the
original output message for which this message is the response. The reported
attributes include a fixed set of attributes that identify the device, followed
by the attributes defined within the element in the devices.xml file.
The fixed and variable attributes are defined in
Instances Directory on page
16.
The message announces new devices.
The attributes for the message vary depending on the device. The
reported attributes include a fixed set of attributes that identify the device,
followed by the attributes defined within the element in the
devices.xml file. For example, the device name comes from the name
attribute. The fixed and variable attributes are defined in Instances
Directory on page 16.
The message announces the value of an object before any
change has occurred. This message allows the LonBridge Server to
acknowledge receipt of an output message so that a LonBridge application