CANopen bit timing

The table below illustrates the CANopen bit timing, the resulting maximum network length and the maximum unterminated cable drop lengths. All CANopen devices must at least support one of the defined bit rates. Optionally a CANopen device may support  further bit rates. The location of the sample point must be as close as possible to 87,5% of the bit time.

CANopen bit timing table

Bit rate Bus length Max. stub length Accumulated stub length  
1 Mbit/s 25 m 1,5 m 7,5 m  
800 kbit/s 50 m 2,5 m 12,5 m  
500 kbit/s 100 m 5,5 m 27,5 m  
250 kbit/s 250 m 11 m 55 m  
125 kbit/s 500 m 22 m 110 m  
50 kbit/s 1000 m 55 m 275 m  
20 kbit/s 2500 m 137,5 m 687,5 m  
10 kbit/s 5000 m 275 m 1375 m