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CANopen Basics Instruction Manual pdf - Kuhnke

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Network Configuration (Hardware)<br />

3.4.2 M12 Plug-and-Socket Connector<br />

2<br />

1<br />

5<br />

3<br />

4<br />

Pin Function<br />

1...3 -<br />

4 CAN_H<br />

5 CAN_L<br />

3.5 Bus Termination<br />

CiA Draft Standard 301<br />

version 3.0<br />

Both ends of a <strong>CANopen</strong> network need to carry a terminating<br />

resistor to minimise line reflexion and, consequently,<br />

to improve the safety of data communication.<br />

Terminating resistance: 120Ω / ¼ W<br />

Station 1<br />

CAN_H<br />

120Ω 120Ω<br />

CAN_L<br />

Station n<br />

If you enconter problems when first starting the bus, the<br />

first thing you should do is to measure the resistance<br />

between CAN_L and CAN_H. The resistance should be<br />

approx. 60 Ω. If it is out by too much check whether the<br />

termination resistors have been put in properly.<br />

26 E 615 GB<br />

06.02.2008

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