The communication distance of a PROFIBUS bus varies depending on the baud rate. At the maximum speed of 12 Mbps, the effective distance is typically limited to around 100 meters. When using a lower baud rate like 1.5 Mbps, the maximum distance can extend up to 800 meters. The longest possible distance without any repeaters is generally up to 1000 meters. To achieve this, it's recommended to set the baud rate as low as possible for optimal performance. If you're lucky and the original PROFIBUS cable is used, it might be possible to reach the maximum distance. However, this doesn't guarantee stable operation. In real-world installations, it's always best to follow the standard specifications strictly. Keeping the distance under or equal to 1000 meters ensures reliable communication and reduces the risk of signal degradation or data loss. Proper cabling and configuration are essential for maintaining the integrity of the PROFIBUS network.
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