PIPROFIBUS
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what is the maximum distance on communication works?
what is the maximum distance on communication works?
PIPROFIBUS
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Top answer
- Regarding RS485:
The maximum distance is 1900m, but it is possible to extend up to 10km with 4 repeaters.
- Concerning fiber-optic:
The maximum cable length for PROFIBUS DP and the baud rate are connected, meaning the higher the transmission speed, the shorter the cable length.
These dependencies in cable lengths and speed are defined in the PROFIBUS standard IEC 61158, and the most important three aspects when designing PROFIBUS DP network are Cable length, Baud rate, and Repeater.
The baud rate can be selected while installation, between 9.6 Kbps and 12 Mbps, showing the corresponding maximum cable length accordingly:
- 9.6 kbps = 1200 meters
- 19.2 kbps = 1200 meters
- 45.45 kbps = 1200 meters
- 93.75 kbps = 1200 meters
- 187.5 kbps = 1000 meters
- 500 kbps = 400 meters
- 1.5 Mbps = 200 meters
- 3 Mbps = 100 meters
- 6 Mbps = 100 meters
- 12 Mbps = 100 meters
The relative cable length can be increased by applying special repeaters, ProfiHubs and ComBricks.
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