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CANopen add-on module
3.8 Cable specification
DC characteristics
3.9 Cable specification
cross-section CAN
Bus-line cross-
sections
8
3. Installation
Bus length
Length-related
resistance
0 to 40 m
70 mΩ/m
40 to 300 m
<60 mΩ/m
300 to 600 m
<40 mΩ/m
600 to 1 km
<26 mΩ/m
At 1000 kB transmission rate the 40 m cable length cannot be guarantee in all cases. For each
system the transmission delay in reciever/transmitter has to be evaluated for a correct function
of the system.
Length
100 m
250 m
500 m
Wire resistance Rw < 21 Ω (32 nodes), < 18.5 Ω (64 nodes), 16 Ω (100 nodes).
SFIDK.PS.023.A2.02
Bus cable
Bus-line cross-section
2
0.25 mm
to 0.34 mm
AWG23, AWG22
2
0.34 mm
to 0.6 mm
AWG22, AWG20
2
0.5 mm
to 0.6 mm
AWG20
2
0.75 mm
to 0.8 mm
AWG18
32 nodes
64 nodes
2
0.25 mm
0.25 mm
2
0.34 mm
0.50 mm
2
0.75 mm
0.75 mm
Termination
resistance
124 Ω (1%)
2
127 Ω (1%)
2
150 Ω to 300 Ω
2
150 Ω to 300 Ω
2
100 nodes
2
0.25 mm
2
0.50 mm
2
1.00 mm
Max.
baurade
1 Mbit/s
at 40 m
500 Mbit/s
at 100 m
100 Mbit/s
at 100 m
50 Mbit/s
at 1k m
2
2
2
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