Comm
- Updated2023-02-17
- 2 minute(s) read
Comm
Reads the time at which the session's interface completed its integration with the network cluster. This represents the time at which communication began.
Inputs/Outputs
session in
The session to read.
error in
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Default value: No error
session out
An output that is the same as session in, provided for use with subsequent nodes.
time communicating
An output that returns the communication time of the interface as a LabVIEW absolute timestamp.
error out
Error information.
The node produces this output according to standard error behavior.
Description
You can use this XNET Read node with any XNET session mode. Because the time is associated with the interface, it can apply to multiple sessions.
This XNET Read node returns time as a LabVIEW absolute timestamp data type.
After your application starts the XNET interface hardware, the communication controller begins to integrate with ECUs in the network. The timestamp at which this integration starts is available using XNET Read (State Time Start). Once the XNET interface is fully integrated and communicating on the network (transmitting and receiving frames), this node captures and returns the time. For the CAN protocol, the time difference between Start and Communicating is very small. For the FlexRay protocol, the time difference can be many milliseconds due to factors such as clock synchronization and cycle length.