Wachendorff WDGA 36A handleiding
Handleiding
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Technical Manual
WDGA with CANopen Interface
5 - General information about CAN
© Wachendorff Automation GmbH & Co. KG
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A CAN network can operate with baud rates up to 1 Mbit/s. Due to the necessary
synchronisation of the nodes, the maximum delay caused by the length of the cable
has to be limited. The limitation corresponds with the baudrate. There is a common
recommendation of the maximum cable length at several baud rates.
Baud rates
Cable length
10 kBit/s
6,7 km
20 kBit/s
3,3 km
50 kBit/s
1,3 km
125 kBit/s
530 m
250 kBit/s
270 m
500 kBit/s
130 m
1 MBit/s
<40 m
Table 5.1: CAN baud rates und recommended cable length limits
5.2 CANopen
CANopen is a specified higher protocol (layer 7 protocol) (Figure 5.3).
Figure 5.3: ISO-OSI-Modell
With CANopen it is possible to transfer larger amounts of data, emergency telegrams
and process data. CANopen describes how the communication is performed. That
means that parameters to configure a device are transmitted in a defined form (profile).
A CANopen profile defines objects representing the different functions of a device.
These objects form a table called object dictionary.
0
200
400
600
800
1000
40 150 270 530 1300 3300 6700
Baudrate [kbits/s]
Cable length [m]
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Productinformatie
| Merk | Wachendorff |
| Model | WDGA 36A |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 11685 MB |
