6 Wiring of the Device
50 Rev. 03/2019
CANopen
®
protocol
If you require information on the CANopen
®
protocol, contact your
MOTORTECH contact person.
CAN bus wiring
Note the following when connecting the CAN bus:
– Each bus end must be fitted with a terminating resistor of 120 Ω (see
drawing).
– The maximum wire length depends on the bit rate:
Bit rate Maximum wire
length
Maximum length
of a stub
Maximum length of
all stubs
1 Mbit/s 25 m (82') 1.5 m (5') 7.5 m (25')
800 kbit/s 50 m (164') 2.5 m (8') 12.5 m (41')
500 kbit/s 100 m (328') 5.5 m (18') 27.5 m (90')
250 kbit/s 250 m (820') 11 m (36') 55 m (180')
125 kbit/s 500 m (1,640') 22 m (72') 110 m (360')
50 kbit/s 1,000 m (3,280') 55 m (180') 275 m (902')
– Only use cables that are specified by the manufacturer for use in the
CAN bus.
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