I need to get the PCAN-USB FD devices I'm using to work reliably.
At the moment I send a single message in PCAN-View and the bus load immediately jumps high and stays there, even though nothing is being transmitted. The LED is flashing red and status in PCAN-View shows Error Passive Warning. This happens nearly every time a message is sent, even if nothing is connected to the PCAN-USB FD device.
Why does the bus load stay high when there is no data flowing on the CAN port?
thanks for your request. It looks you are a CAN newbie
Please take a look at the following topic in our forum to understand what´s "wrong", especially the question from "Lukast85" and the answer from K.Wagner
https://www.peak-system.com/forum/viewt ... ight#p5230
For more infos about "Error passive" (also known als Busheavy) please take a look at the following topic in our forum:
https://www.peak-system.com/forum/viewt ... f=120&t=39
What is the bus load chart displaying if there is no CAN data being sent or received by the PCAN-USB device?
Why is PCAN-View displaying "Error Passive" when only a single CAN message, with no data bytes (DLC=0), is sent?
Why does a single message cause the error count to jump to 127 immediately and trigger the Error passive state?
I'm trying to understand why the PCAN-USB device immediately enters an error condition.
If you send out a single CAN Frame to a CAN Network where NO OTHER CAN Device is working (same Bitrate, active mode), the CAN Controller will never get a ACK (because there is no CAN node that could ACK) and so the CAN Core send the CAN Frame again and again and again..
* Bus Errors
* 100% Busload
This is the same info that my colleauges Keneth write in the Post where Gunter send you to...
Technical Support Team