Protocol analysis
R&S
®
RTO6
593
User Manual 1801.6687.02 ─ 05
13.7.3.2
Triggering on CAN FD data
The "Iden Data" trigger type supports triggering on data bytes of specific value at
specific location in the data field of a frame. The "Data Pattern" field provides 8 data
bytes to define the data pattern. For data fields longer than 8 byte, you can define the
position where the specified pattern starts.
The following examples demonstrate how the data pattern and data position are
defined.
To set up the trigger
1. Set the basic trigger events:
a) Select the source: "Serial bus".
b) Select the serial bus.
c) Select the protocol: "CAN/CAN FD".
d) Select the trigger type: "Iden Data".
e) Select the standard:"CAN FD" or "Any".
2. In this example, the identifier does not matter. Set the "ID type = Any".
3. Define the data setup as described in the examples.
Example: Triggering on the second data byte
The CAN FD frame has 2 or more data bytes, where the value of the second data byte
should be E7.
●
Set "DLC
≥
2".
●
Set the data pattern: "= XX E7".
Example: Triggering on the seventh or later data byte
The CAN FD frame has 12 or more data bytes, where the value of the seventh or later
data byte should be 17.
●
Set "DLC
≥
9".
●
Set the data pattern: "= XX XX XX XX XX XX 17 XX".
Example: Triggering on a data byte at a given position
The CAN FD frame has 12 or more data bytes. the trigger is set at the 8th data byte
starting at the 4th data byte or later, with data byte value = 17.
●
Set "DLC
≥
9".
●
Set the data pattern: "= XX XX XX XX XX XX XX 17 ".
●
Set the position of the data pattern: "In range", "4" to "12".
CAN and CAN FD (option R&S
RTO6-K520)
