Operating instructions

5. Installation MICRO PANEL XV-102 3.5"

30 M002869-02, 07/2009

# The maximum baud rate depends on the cable length:

Tab. 12 Relationship of cable length / baud rate

CAN bus topology #

# A bus segment can connect up to 32 bus stations.

# Several bus segments can be linked via repeaters (bidirectional amplifiers). Refer to the documen-

tation of the repeater manufacturer for further information.

# A bus segment must be provided with cable termination (120 Ω) at both ends. These terminations

must be connected in the connector, directly between pin 2 and 7.

Cable length Max. baud rate

40 m 1000 Kbit/s

50 m 800 Kbit/s

100 m 500 Kbit/s

250 m 250 Kbit/s

500 m 125 Kbit/s

500 m 100 Kbit/s

1000 m 50 Kbit/s

2500 m 20 Kbit/s

5000 m 10 Kbit/s

# The use of repeaters is recommended with cables over 1000 m in length. Repeaters

can also be used to implement electrical isolation. Refer to the documentation of the

repeater manufacturer for further information.

# Observe the recommendations of the CiA (CAN in Automation).

# When preparing the cables, ensure that there is a low-resistance connection between

the cable shield and the connector casing (→ Chapter 5.3.2, "

" 23).

# The bus segment must be terminated at both ends.

# No more than two terminations must be provided on each bus segment.

# Transmission faults can occur if operation is carried out without the correct termina-

tion.

Fig. 12 Termination

CAN-H

CAN-L

120