A node set to the wrong baudrate causes bus errors
(affecting other nodes) when it attempts to go online.
Bus Errors
What do to when you see
or
:
!
If you suspect an intermittent cable or
connector, shake, bend or twist the suspected
cable and/or connector while watching the error
rate for changes (up or down).
!
Check the other measurements and investigate
the suspect device(s) for faults consistent with
the observed symptoms.
Some techniques you can use are:
!
Press
or
to identify the device(s) with
higher error rates than other nodes. Calculate
the ratio of error rate to frame rate of suspect
nodes and check for above average ratios.
Devices with above average error ratios should
be investigated further.
Bus Errors deal with
these two wires
(CANL & CANH)
!
!
Replace the device and/or cabling
Temporarily remove the device from the
network to see of the errors cease.
2
BUS
ERRORS
7
Excessive cable lengths and faulty nodes can
cause errors in the transmissions of some/all
other nodes. Do not assume that the node(s) with
the highest error rate is faulty.
Thresholds:
Error Rate High Fault
Error Rate High Warn
15 /s
1 /s
