Interpretation of CAN Min/Max
Posted: Tue 12. Aug 2025, 11:07
Hi,
as I am facing some major issues with my CAN bus in the field which I am trying to identify with the PCAN-MiniDiag FD I would like to get detailed information about CAN Min/Max.
It says (compared to CAN Voltages):
CAN Min/Max: Measurement of minimum and maximum voltage values for CAN-High and CAN-Low in the range from -5 to +8 V
CAN Voltages: Measurement of dominant and recessive levels for CAN-High and CAN-Low in the range from -5 to +8 V
So do I get voltages (even spikes) on CAN Min/Max screen and actually interpretated signal levels on CAN-Voltages screen?
As I have quite big spikes in my signal edges and the problem of occasional unknown high levels at end of frame (see attached picture) it would be very helpful to know if I see the high spikes end of frame on CAN Min/Max or only those that are long enough to be intepretated as dominant level.
Thanks in advance,
Christoph
as I am facing some major issues with my CAN bus in the field which I am trying to identify with the PCAN-MiniDiag FD I would like to get detailed information about CAN Min/Max.
It says (compared to CAN Voltages):
CAN Min/Max: Measurement of minimum and maximum voltage values for CAN-High and CAN-Low in the range from -5 to +8 V
CAN Voltages: Measurement of dominant and recessive levels for CAN-High and CAN-Low in the range from -5 to +8 V
So do I get voltages (even spikes) on CAN Min/Max screen and actually interpretated signal levels on CAN-Voltages screen?
As I have quite big spikes in my signal edges and the problem of occasional unknown high levels at end of frame (see attached picture) it would be very helpful to know if I see the high spikes end of frame on CAN Min/Max or only those that are long enough to be intepretated as dominant level.
Thanks in advance,
Christoph