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Electrical installation

Common control terminals

System bus connection (CANopen)

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213

EDS84ASC552 EN 9.1

6.6.2 System bus connection (CANopen)

Basic structure of the CAN network

Every segment of the CAN network must be terminated by resistors (120 )) between CAN

Low and CAN High. The 8400 controller has one integrated bus terminating resistor each

which can be activated via DIP switch.

The bus terminations of the system bus (CAN) are labelled by ”R” in every one of the

examples below.

If a CAN network has only one segment, the master (M) with integrated bus termination

marks the start, and the last node (S) marks the bus termination.

S SS

E94YCPM012a

Fig. 6-27 Example: CAN network with one segment

A CAN network with multiple segments includes repeaters (X) for coupling the segments.

The repeaters are equipped with integrated bus terminations.

S SS

S S

E94YCPM012b

Fig. 6-28 Example: CAN network with repeater

If no repeater is used at the end of the segment, the bus terminating resistor on the last

node must be activated.

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Lenze 8400 Bedienungsanleitung Seite 213