00772425 datasheet(34/42 Pages) BURKERT

34 / 42 page

Type büS

büS networks with maximum

network expansion

büS NETWORKS WITH MAXIMUM NETWORK

EXPANSION

Networks with varying devices, cable lengths, baud rates and topologies are tested.

The networks shown here should only serve as examples of what is possible and are intended as a refer-

ence point for your own setup. For large networks close to the limit or even above, it always makes sense

to check the network quality.

13.1

Line topology

For the baud rates 500 kbit/s, 250 kbit/s and 125 kbit/s the maximum cable length and the maximum num-

ber of devices have been determined.

13.1.1

500 kbit/s

Communication of the entire büS network worked with up to 84 devices and 1 büS stick. The total cable

length was 75 metres.

23 Devices

10 m

3 m

5 m

Termination resistor

Diagnostics

Power supply

Measurement

point

21 Devices

8 Devices

9 Devices

5 m

11 Devices

10 m

3 Devices

4 Devices

5 Devices

10 m

*25 m additional cable length for wiring the devices

Fig. 36: 500 kbit/s, 84 devices, cable length 75 m

Measurements with a maximum cable length of 100 metres was possible with 44 devices and 1 büS stick.

A length of 100 metres is defined as the limit in the CANopen specification.

6 Devices

10 m

3 m

10 m

Termination resistor

Diagnostics

Power supply

Measurement

point

9 Devices

25 m

11 Devices

20 m

4 Devices

5 Devices

10 m

*25 m additional cable length for wiring the devices

Fig. 37: 500 kbit/s, 44 devices, cable length 100 m

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