Individual tests
5.1 Wiring
test
In the wiring test the CANcheck measures the resistance between all line pairs on
the CAN connector. The pin assignment of the CAN connector corresponds to CiA
DS-102 (see section 2.1.1).
The CANcheck checks whether the resistance between CAN_H and CAN_L corre-
sponds to the termination resistors. The tolerance range for the termination resis-
tors is given in section 10.1.
For all other line pairs, the nominal value is "high resistance". The tolerance range
for "high resistance" is given in 10.1.
The following resistances are exceptions:
CAN_SHLD
→
CAN_GND
CAN_SHLD
→
GND
GND
→
CAN_GND
According to CiA, the lines CAN_SHLD and GND are optional. Therefore there are
no nominal values for these resistances.
For the wiring test you can connect the CANcheck to the CAN network at any
point. Please switch the CAN network off before the wiring test. 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 of
every individual CAN node must then be greater than the "number of CAN nodes"
x 1 k
Ω
.
Please select the menu item "Wiring test" with the keys UP and DOWN and press
the OK key.
Individual tests
▼
-Wiring test
-Term. resistors
-Line length
-Line impedance
-Power supply
-Baudrate detection
When the CAN network is switched off, the test instructions appear. Error mes-
sages are explained in section 6. When you have followed the test instructions,
please start the test with the OK key.
During the measurement, a message appears. After the measurement, the test
result appears.
Copyright IXXAT Automation GmbH
CANcheck Manual, Version 1.2
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