Error messages and indications
6.3 Error message with low-impedance resistance
Line length
Term. resistors
lower than 1k
Ω
Test rejected
Before measurement of the line length, the resistance between CAN_H and
CAN_L is measured. If this is not high resistance, the above error message is dis-
played.
In this case, cancel the test with the ESC key and remove both termination resis-
tors. In addition, you should disconnect all CAN nodes from the network.
Switched off CAN nodes with a high resistance between CAN_H, CAN_L and
ground can remain connected. As the resistors of all connected CAN nodes are
parallel, however, the resistance off each individual CAN node must then be
greater than the "number of CAN nodes" x 1 k
Ω
.
6.4 Error message with inverted polarity
Baudrate detection
H-L inverted [ERROR]
500 kBit/s
With baudrate detection and the dependent tests:
•
Identifier scan
•
Node ID scan
•
Bus load
•
Signal level per identifier
•
Signal level per node ID
•
Trigger output
the polarity of the signal between CAN_H and CAN_L is checked. If the polarity is
inverted, the above error message is displayed. In this case the dependent tests
cannot be carried out.
Copyright IXXAT Automation GmbH
CANcheck Manual, Version 1.2
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