Baud Rate
The Fieldbus Box for PROFIBUS has automatic baud rate detection. As soon as the electrical power is switched on, the Fieldbus Box searches for the baud rate that is being used, and stores it for as long as the supply voltage is present.
Note If you change the baud rate of your PROFIBUS master, you must switch the Fieldbus Box off and on again once. |
Distances
The bus cable is specified in EN 50170. This yields the following lengths for a bus segment.
Baud rate in kbits/sec | 9.6 | 19.2 | 93.75 | 187.5 | 500 | 1500 | 12000 |
|---|---|---|---|---|---|---|---|
Cable length in m | 1200 | 1200 | 1200 | 1000 | 400 | 200 | 100 |
Stubs up to 1500 kbaud <6.6 m; at 12 Mbaud stub segments should not be used.