The following properties are available on the Frame Properties page if the database
cluster is configured to use the CAN protocol.
- Name—Name of the frame. This must be unique within the cluster.
- Arbitration ID—CAN frame identifier. This ID is used to determine priority during
arbitration. In the standard frame format the length of the ID is 11 bits. The extended frame format has two
fields, which are 11 bits and 18 bits in length. Select 29-Bit
ID for the extended frame format.
- 29-Bit ID—Enable Arbitration ID to use extended frame
- Payload Length—Number of data bytes that can be transmitted in the frame's payload. The
payload length for CAN is 0–8 bytes. CAN FD
allows values of 12, 16, 20, 24, 32, 48, and 64.
- Timing Type—Specifies the CAN frame timing: Cyclic Data, Event Data, Cyclic Remote,
Event Remote, or Event/Cyclic.
- I/O Mode—Specifies the CAN standard to be used. You can specify an option only in CAN
FD + BRS mode, which enables you to configure each frame to be transmitted
in any of the three options.
- CAN—CAN 2.0 standard, with a payload length of 0–8 bytes.
- CAN FD—CAN Flexible Data-Rate, which allows extended frame format and a
payload length up to 64
- CAN FD + BRS—CAN FD with Baud Rate Switch, which enables the CAN frame to be
transmitted at the standard data rate or the faster CAN FD
- Transmit Time—Frame rate for cyclic types; the debounce time for event frames.
- Mapped PDUs—Any PDU(s) mapped to this frame. Displays the PDU name, the start bit of the
PDU inside the frame, and the update bit for the PDU inside the frame.
- Bit Layout—Visual element depicting the signals contained within this frame and the
byte order of each signal. Beneath the bit layout on the Frame Properties
page, you can select Show as PDUs to show the PDU(s)
mapped to this frame.
- Comment—Note or descriptive text related to this frame. The comment is used for
The following properties are available in the J1939
Configuration panel of the Frame Properties page if the database
cluster is configured to use the SAE J1939 application protocol with CAN.
- J1939 PGN—Parameter Group Number (PGN), which identifies the frame and defines which
signals it contains.
- Reserved (EDP)—Specifies an Extended Data Page bit value of zero. In combination with
Data Page, functions as a page selector for
- Data Page—Specifies a Data Page bit value of zero. In combination with
Reserved (EDP), functions as a page selector for
- PDU Format—Defines whether the frame is to be transmitted with a destination address or
broadcast to the entire network.
- PDU Specific—If PDU Format is between 0 and 239, PDU
Specific is interpreted as the destination address (PDU1).
If PDU Format is 240 or greater, then the frame
intended for all devices and PDU Specific is
interpreted as a Group Extension (PDU2).
- Priority—Priority value of the frame, used when multiple CAN frames are sent on the
bus at exactly the same time. Lower numbers have higher priority.
- Source Address—Address of the node transmitting the frame.