Kvaser Memorator Professional User’s Guide
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To save yourself a lot of trouble, always terminate the CAN
bus properly
5.11
CAN bus overrun
Under extremely heavy load, high bit rates and long bursts of messages, the
Kvaser Memorator Professional can lose messages. This loss should be a rare
occasion. If such a loss occurs, the Kvaser Memorator Tools will display a
notification message when the file is extracted. Some of the file formats, that
support such a feature, will also indicate when the overrun occurred. (See help
section in Kvaser Memorator Tools for details about file formats.)
To avoid losing important messages during logging, filters can be
used. This will decrease the load on the Kvaser Memorator
Professional and ensure that important information is not lost.
5.12
Daisy-chaining several interfaces
You can daisy chain several Kvaser Memorator Professional units to gain
additional logging capacity. To do this,
•
Connect the trigger output of one device to the trigger input of the next
device.
•
Using the Kvaser Memorator Tools, configure the trigger output of the first
device to emit a pulse when the disk becomes full.
•
Configure the trigger input of the second device to start logging when a
falling edge is detected. Set the post-trigger time to 0 (infinite) and the
pre-trigger time to 1 second.
You now have a setup where the second unit starts logging when the first one
becomes full.
Kvaser AB, Mölndal, Sweden — www.kvaser.com
