signal	The signal tag denotes a logical event that can be triggered by the hardware device.

id                  	Specifies an unique identifier for this element.
implementation      	Specifies the implementation class name.
idref               	Specifies a reference to the element with the matching <a href=&quot;"idAttribute.
AttributeSimpleMeasurementType	Specifies the signal data type.
trigger             	Specifies the signal supports trigger.

<description>         	Specifies the signal description.
<history>             	Specifies the signal history.
<optional>            	Defines if this signal is optional.
<units>               	Specifies the signal units.
<deprecated>          	Specifies that the contents of this element should be marked as deprecated.
<specreference>       	Specification reference for this signal.
<key>                 	Specifies the unique signal key.
<configuration>       	Defines this signal as a configuration signal.
<rate>                	Specifies the rate that the signal is received in milliseconds.
<message>             	Specifies the message to  trigger the signal.
<method>              	Specifies the method to handle  the signal.
<data>                	Specifies the data when  the signal triggers.
<signal>              	Specifies the signal to listen.
<field>               	Specifies the field name to use on the receiving signal.
<messages>            	Specifies the messages to trigger the signal.
<pid>                 	Specifies the pid for this signal.
<parameters>          	Specifies a parameter group.
<maximum>             	Specifies the maximum value.
<minimum>             	Specifies the minimum value.
<negative>            	Negate the value.
<not>                 	Logical not of a boolean value.
<scale>               	Scale the value.
<shift>               	Shift the value.
<translate>           	Translate (add) to the value.
