Technical Manual &
Cabling Instructions
Page 63 / MAN000596
Mechanics and
Cabling
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Example 3. Control system topology in theory with 250 kbit/s bus speed; Control Units in
traditional bus arrangement. Termination resistor must be connected at control unit 1 and
control unit 5. For more information about the bus speeds, refer to CiA DS-102 standard.
Example 4. The usage of the termination resistor (TR) in a conventional bus. The maximum
recommended bus length is directly dependent on the bus speed.
In theory, the maximum length with the maximum speed can be up to 25 meters. If the bus
speed is lower, the length can be extended.
The maximum length of the bus depends on the bus speed. For more information about the bus
speeds, see the table below / refer to CiA DS-102 standard.
The following table shows some baud rates in general purpose CAN bus networks as well as
the maximum bus length for a given baud rate, that CAN in Automation (CiA) international users
and manufacturers group has recommended to be used. For more information, refer to CiA DS-
102 standard.
CAN bus baud rates and bus lengths according to CiA DS-102 standard
1 Mbits/s 25 m
800 kbits/s 50 m
250 kbits/s 250 m
125 kbits/s 500 m
50 kbits/s 1000 m
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