User Guide > FlexRay Frame

FlexRay Frames

TCN TimeAnalysis offers modelling of communication via FlexRay busses over which all data messages are carried as payload in FlexRay frames. Both static and dynamic FlexRay frames are defined using the same dialog.

To add a new FlexRay Frame to your system model, right-click on a Host FlexRay port in the Topology/Tree View and select the Add FlexRay Frame item.

This will open the FlexRay Frame dialog:

Properties

Targets

Select the Target Host(s) in the list of all available targets. By checking the Broadcast checkbox, all Hosts will be selected as Targets.

Note! If the network originating from the Source contains cycles in the IPDU, Broadcast is not allowed.

Slot ID

In the static segment of a FlexRay communication cycle, the slot ID defines the slot in which a FlexRay frame is transmitted. The slot ID also determines, in combination with the FlexRay bus parameter Number Of Static Slots, whether the frame is sent in the static or dynamic segment. In the dynamic part, the slot ID is equivalent to a priority. Dynamic frames with lower slot IDs are all sent until the end of the dynamic segment. Higher slot IDs, which were not able to send in a specific cycle, must wait until the next cycle and can then try again.

Base Cycle

Defines the very first communication cycle in which a specific FlexRay frame is sent.

Byte Size

The used length (in bytes) of the payload field of a FlexRay frame.

Repetition

The number of communication cycles (after the first cycle) whenever the frame described by this timing is sent again. The FlexRay communication controller allows only specific values. The reader is referred to the AUTOSAR System Template document or the FlexRay specification for more detailed information regarding the allowed values.

IPDU

This drop down selector allows you to choose existing IPDU(s) to be carried in the payload data field of the FlexRay Frame. Please see the separate IPDU article for an explantion of the different IPDU properties.

Actions

The following actions are available for existing Bus Frames - right-click on a FlexRay Frame in the Tree View:

     
Edit Opens the FlexRay Frame dialog in edit mode.
Delete Removes the FlexRay from the topology.