Unique_Subject


Used for:	RTserver, RTclient, RTmon, RTgms processes
Type:	String
Default Value:	`_Node_Pid`
Valid Values:	Any valid string unique for all the RT processes to which a particular RTserver is connected

For RTclient, RTmon, and RTgms processes, the Unique_Subject option specifies a unique subject that RTclient, RTmon, or RTgms automatically subscribes to when it creates a connection to an RTserver. For RTserver processes, the Unique_Subject option specifies a unique name that RTserver uses to identify itself when it connects to other RTservers. For an RTserver, unlike for the other RT processes, the value for Unique_Subject is used as a destination only for CONTROL messages, not for other types of messages.

RTserver does not allow multiple RT processes (RTservers, RTclients, RTmons, or RTgms) in the same project to have the same value for the option Unique_Subject.

The default value for Unique_Subject for any RT process is _Node_Pid, where:


`Node`	is the network node name of the computer on which the RT process is running.
`Pid`	is the operating system process identifier of the RT process.

This option is required and cannot be unset.